User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:89.0) Gecko/20100101 Firefox/89.0

Steps to reproduce:

Some of the last few nightlies have had some weird glitches.

Actual results:

UI at top of webpage has red lines that move/change as I move the mouse.

Windows such as Developer Tools, About are functional but don't display anything.

Buttons on webpages show coloured square overlays

Expected results:

No glitches

https://imgur.com/a/tIE4QRp

^ Some pics and a GIF

BTW, I'm using FF over RDP - If I check the remote PC running the FF instance, I just seen a black square.

`Application Basics

Name: Firefox
Version: 91.0a1
Build ID: 20210604213013
Distribution ID:
Update Channel: nightly
User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:91.0) Gecko/20100101 Firefox/91.0
OS: Windows_NT 6.1 7601
Launcher Process: Enabled
Multiprocess Windows: 2/2
Fission Windows: 2/2 Enabled by experiment
Remote Processes: 38
Enterprise Policies: Inactive
Google Location Service Key: Found
Google Safebrowsing Key: Found
Mozilla Location Service Key: Found
Safe Mode: false

Crash Reports for the Last 3 Days

Report ID: bp-9879f276-661d-4af5-9377-c65c30210605
Submitted: 1 day ago

Report ID: bp-5de9d5d5-bbac-4283-a0e8-a1f730210605
Submitted: 1 day ago

Report ID: bp-d6da452b-18c9-4492-9cef-106080210605
Submitted: 1 day ago

Report ID: bp-3aa6c819-65a8-4cf4-969c-66b020210605
Submitted: 1 day ago

Report ID: bp-63386340-58d5-46a0-96f6-4b7ba0210605
Submitted: 1 day ago

Report ID: bp-8108da1b-5ea5-4605-b6ff-beea60210605
Submitted: 1 day ago

Report ID: bp-094370e6-bd20-445d-b061-b0cbd0210605
Submitted: 1 day ago

Report ID: bp-9c8c2e5b-7d6c-4ed4-a39e-4831d0210605
Submitted: 1 day ago

Report ID: bp-cce58e77-c47a-4e48-9c2a-30d580210605
Submitted: 1 day ago

Report ID: bp-58d9887e-452a-4127-9377-3619c0210605
Submitted: 1 day ago

Report ID: bp-a782660a-8834-4a59-8a97-2be970210605
Submitted: 1 day ago

Report ID: bp-d24017e7-fe5d-437c-9907-0dc260210605
Submitted: 1 day ago

Report ID: bp-8ab1b16e-5124-485e-8171-2967f0210605
Submitted: 1 day ago

Report ID: bp-65545f1b-9bb9-4609-9ea7-ead070210605
Submitted: 1 day ago

Report ID: bp-fae503f4-c0d9-461d-be7a-26baa0210605
Submitted: 1 day ago

Report ID: bp-cdf6d893-b951-4e49-9c2f-b98200210605
Submitted: 1 day ago

Report ID: bp-c3bf1fd0-3590-43c2-a3cd-5b4b90210605
Submitted: 1 day ago

Report ID: bp-5e7b07c0-1ada-41a3-80f8-bfc4f0210605
Submitted: 1 day ago

Report ID: bp-46068801-b7e1-46a8-ab6d-990250210605
Submitted: 1 day ago

Report ID: bp-7673e669-06ec-4b6a-85ad-d0f390210605
Submitted: 1 day ago

Report ID: bp-8c86a516-f23d-43a4-a012-015da0210605
Submitted: 1 day ago

Report ID: bp-e2039ed1-7a06-491d-a71e-a0f4e0210605
Submitted: 1 day ago

Report ID: bp-499b3c22-4798-486e-9f96-803430210605
Submitted: 1 day ago

Nightly Features

Name: DoH Roll-Out
Version: 2.0.0
ID: doh-rollout@mozilla.org

Name: Firefox Screenshots
Version: 39.0.1
ID: screenshots@mozilla.org

Name: Form Autofill
Version: 1.0.1
ID: formautofill@mozilla.org

Name: Picture-In-Picture
Version: 1.0.0
ID: pictureinpicture@mozilla.org

Name: Web Compatibility Interventions
Version: 23.3.0
ID: webcompat@mozilla.org

Name: WebCompat Reporter
Version: 1.4.2
ID: webcompat-reporter@mozilla.org

Remote Features

bug-1705528-rollout-ongoing-fission-nightly-rollout-clone-nightly-90-100: active
upgradeDialog: (upgradeDialog-defaultEnabled)

Remote Processes

Type: Extension
Count: 1

Type: Privileged About
Count: 1

Type: Isolated Web Content
Count: 32

Type: Preallocated
Count: 3

Type: Socket
Count: 1

Add-ons

Name: Ageless
Type: extension
Version: 1.3
Enabled: true
ID: 2341n4m3@gmail.com

Name: Amazon.co.uk
Type: extension
Version: 1.9
Enabled: true
ID: amazon@search.mozilla.org

Name: Bing
Type: extension
Version: 1.3
Enabled: true
ID: bing@search.mozilla.org

Name: Dark Background and Light Text
Type: extension
Version: 0.7.6
Enabled: true
ID: jid1-QoFqdK4qzUfGWQ@jetpack

Name: Dark Reader
Type: extension
Version: 4.9.33
Enabled: true
ID: addon@darkreader.org

Name: Download All Images
Type: extension
Version: 0.7.4
Enabled: true
ID: {32af1358-428a-446d-873e-5f8eb5f2a72e}

Name: DownThemAll!
Type: extension
Version: 4.2.6
Enabled: true
ID: {DDC359D1-844A-42a7-9AA1-88A850A938A8}

Name: DuckDuckGo
Type: extension
Version: 1.1
Enabled: true
ID: ddg@search.mozilla.org

Name: Duplicate Tabs Closer
Type: extension
Version: 3.5.3
Enabled: true
ID: jid0-RvYT2rGWfM8q5yWxIxAHYAeo5Qg@jetpack

Name: eBay
Type: extension
Version: 1.3
Enabled: true
ID: ebay@search.mozilla.org

Name: External Application Button
Type: extension
Version: 0.4.2
Enabled: true
ID: {65b77238-bb05-470a-a445-ec0efe1d66c4}

Name: Feedbro
Type: extension
Version: 4.9.9
Enabled: true
ID: {a9c2ad37-e940-4892-8dce-cd73c6cbbc0c}

Name: Firefox Pioneer
Type: extension
Version: 1.0
Enabled: true
ID: pioneer-opt-in@mozilla.org

Name: Flickr Fixr
Type: extension
Version: 1.10.2
Enabled: true
ID: {266065e3-e12f-4eb1-9ba0-9506ae8f6c9e}

Name: Flickr Size Pickr
Type: extension
Version: 1.2.0
Enabled: true
ID: jid1-3m0VW3IuKlb4Nw@jetpack

Name: Google
Type: extension
Version: 1.1
Enabled: true
ID: google@search.mozilla.org

Name: Google Search "View Image" Button
Type: extension
Version: 1.5
Enabled: true
ID: {23cc126f-bd98-4a53-807a-cbc9af2cfe89}

Name: Google search link fix
Type: extension
Version: 1.6.10
Enabled: true
ID: jid0-XWJxt5VvCXkKzQK99PhZqAn7Xbg@jetpack

Name: Image Download for Flickr
Type: extension
Version: 1.0.0
Enabled: true
ID: image_download_for_flick@image_download_for_flick.org

Name: Imagus
Type: extension
Version: 0.9.8.74
Enabled: true
ID: {00000f2a-7cde-4f20-83ed-434fcb420d71}

Name: In-Page Pop-up Reporter
Type: extension
Version: 1.6
Enabled: true
ID: {feb799e2-29e2-4e35-b862-cc4e1842b6f5}

Name: Link Cleaner
Type: extension
Version: 1.5
Enabled: true
ID: {6d85dea2-0fb4-4de3-9f8c-264bce9a2296}

Name: Link Status Redux
Type: extension
Version: 3.12
Enabled: true
ID: linkstatus@jha.iki.fi

Name: Linkificator
Type: extension
Version: 3.3.3
Enabled: true
ID: linkificator@markapola

Name: LocalCDN
Type: extension
Version: 2.6.7
Enabled: true
ID: {b86e4813-687a-43e6-ab65-0bde4ab75758}

Name: Neat URL
Type: extension
Version: 5.0.0
Enabled: true
ID: neaturl@hugsmile.eu

Name: NextPlease
Type: extension
Version: 0.10.0
Enabled: true
ID: {57B65ABB-F4E3-4358-8472-15AEE0833E11}

Name: No Transition
Type: extension
Version: 1.1.8
Enabled: true
ID: {8b5fde66-c64d-4a33-99f1-c7c94138d67e}

Name: Popup ALT Attribute
Type: extension
Version: 4.2.2
Enabled: true
ID: {61FD08D8-A2CB-46c0-B36D-3F531AC53C12}

Name: Reddit Enhancement Suite
Type: extension
Version: 5.22.5
Enabled: true
ID: jid1-xUfzOsOFlzSOXg@jetpack

Name: Redirector
Type: extension
Version: 3.5.3
Enabled: true
ID: redirector@einaregilsson.com

Name: Request Control
Type: extension
Version: 1.15.5
Enabled: true
ID: {1b1e6108-2d88-4f0f-a338-01f9dbcccd6f}

Name: reveddit quarantined
Type: extension
Version: 0.0.0.3
Enabled: true
ID: {c7cf4526-7578-4129-a483-e38988034f5d}

Name: reveddit real-time
Type: extension
Version: 0.0.1.7
Enabled: true
ID: real-time-stable@reveddit.com

Name: Rewritify
Type: extension
Version: 1.0
Enabled: true
ID: {20ab8402-8ffc-497c-859b-81900038e79a}

Name: Save Image to Downloads
Type: extension
Version: 1.0.0
Enabled: true
ID: save_to_downloads@save_to_downloads.org

Name: Search image
Type: extension
Version: 0.1.3
Enabled: true
ID: searchimage@searchimage.fr

Name: Search Image by Google
Type: extension
Version: 1.0
Enabled: true
ID: {0ff753cf-40c3-49bd-b9bf-2c1b84ed40e9}

Name: Simple download notifier
Type: extension
Version: 0.2.1
Enabled: true
ID: sdn@makitaaaaa

Name: Simple YouTube MP3 Button
Type: extension
Version: 1.2.1
Enabled: true
ID: {e33788ea-0bb9-4502-9c77-bdc551afc8ab}

Name: Skip Redirect
Type: extension
Version: 2.3.5
Enabled: true
ID: skipredirect@sblask

Name: Tab Count in Window Title
Type: extension
Version: 5.5
Enabled: true
ID: {c28e42b2-28b5-45f0-bdc8-6989ae7e6a7e}

Name: Tabby - Window and Tab Manager
Type: extension
Version: 2.1.1
Enabled: true
ID: tabby@whatsyouridea.com

Name: Tampermonkey
Type: extension
Version: 4.13.6136
Enabled: true
ID: firefox@tampermonkey.net

Name: Text Link WE
Type: extension
Version: 1.4
Enabled: true
ID: Text-Link-WE@nekojiro.org

Name: TitleURL
Type: extension
Version: 0.5
Enabled: true
ID: {fcdb71fb-c9e5-48a3-9d04-e32713f5da88}

Name: Tree Style Tab
Type: extension
Version: 3.8.1
Enabled: true
ID: treestyletab@piro.sakura.ne.jp

Name: uAutoPagerize
Type: extension
Version: 0.1.4.1
Enabled: true
ID: @uautopagerize

Name: Video Downloader Prime
Type: extension
Version: 0.2.5
Enabled: true
ID: jid1-i6dUGvCrz2WZu8@jetpack

Name: Vimeo Tooltip & Notification
Type: extension
Version: 1.2.0
Enabled: true
ID: vimeotooltip@mozilla.org

Name: Wikipedia (en)
Type: extension
Version: 1.1
Enabled: true
ID: wikipedia@search.mozilla.org

Name: YouTube mp3 Downloader
Type: extension
Version: 3.0.2
Enabled: true
ID: {defe5404-0b6f-4cce-a119-ee0df858e5f9}

Name: YouTube-Mp3.my
Type: extension
Version: 1.1
Enabled: true
ID: {d15ee6c5-5946-4b44-be62-dd5e66342179}

Name: YouTube™ on Hover Preview
Type: extension
Version: 0.1.9
Enabled: true
ID: {732db00c-07ee-4763-a8c7-fd666803287e}

Name: Auto Tab Discard
Type: extension
Version: 0.4.7
Enabled: false
ID: {c2c003ee-bd69-42a2-b0e9-6f34222cb046}

Name: AutoMute
Type: extension
Version: 2.1.1
Enabled: false
ID: AutoMute@hentschels.com

Name: Booru Extractor 2
Type: extension
Version: 0.2.2
Enabled: false
ID: @booruextractor

Name: ColorZilla
Type: extension
Version: 3.3
Enabled: false
ID: {6AC85730-7D0F-4de0-B3FA-21142DD85326}

Name: Dark Mode
Type: extension
Version: 0.4.1
Enabled: false
ID: {174b2d58-b983-4501-ab4b-07e71203cb43}

Name: Decentraleyes
Type: extension
Version: 2.0.15
Enabled: false
ID: jid1-BoFifL9Vbdl2zQ@jetpack

Name: Double-click Image Downloader
Type: extension
Version: 7.1.2
Enabled: false
ID: jid1-xgtdawe3yyUeBQ@jetpack

Name: Firefox Color
Type: extension
Version: 2.1.7
Enabled: false
ID: FirefoxColor@mozilla.com

Name: GIF Blocker
Type: extension
Version: 0.1.2
Enabled: false
ID: {60ade0f1-9b19-4e45-a570-4aa7276ee40f}

Name: Google Translator for Firefox
Type: extension
Version: 3.0.3.3
Enabled: false
ID: translator@zoli.bod

Name: I don't care about cookies
Type: extension
Version: 3.3.0
Enabled: false
ID: jid1-KKzOGWgsW3Ao4Q@jetpack

Name: Lilo Moteur et Solidaire (v2-ts)
Type: extension
Version: 2.3.0
Enabled: false
ID: {3004c9c0-ac9c-4ae2-9ac8-c59948bdd021}

Name: Load Progress Bar
Type: extension
Version: 0.22
Enabled: false
ID: load-progress-bar@luben.github.com

Name: Luminous: JavaScript events blocker
Type: extension
Version: 0.0.28
Enabled: false
ID: luminous@gbaptista.com

Name: Multiple Tab Handler
Type: extension
Version: 3.1.9
Enabled: false
ID: multipletab@piro.sakura.ne.jp

Name: Newsfeed Adblock & Filter
Type: extension
Version: 3.4.4
Enabled: false
ID: facebook@filter.com

Name: NoScript
Type: extension
Version: 11.2.8
Enabled: false
ID: {73a6fe31-595d-460b-a920-fcc0f8843232}

Name: Old Reddit Redirect
Type: extension
Version: 1.4.0
Enabled: false
ID: {9063c2e9-e07c-4c2c-9646-cfe7ca8d0498}

Name: PASTats
Type: extension
Version: 1.1
Enabled: false
ID: {c30c2a74-13c2-447c-baf8-4dcff4e574f8}

Name: Play/Pause
Type: extension
Version: 2.0.3
Enabled: false
ID: @play-pause

Name: Reading Progress Bar
Type: extension
Version: 1.0
Enabled: false
ID: {ab81ae3f-aaef-4d6a-918c-2697e8e9ab57}

Name: Redirect Cleaner
Type: extension
Version: 3.0.0
Enabled: false
ID: redirectcleaner@example.net

Name: Remove Redirect
Type: extension
Version: 2.2.1.1
Enabled: false
ID: removeredirect@hyperfekt

Name: Saka Key
Type: extension
Version: 1.26.3
Enabled: false
ID: {46104586-98c3-407e-a349-290c9ff3594d}

Name: Save Video As
Type: extension
Version: 1.4
Enabled: false
ID: {63f3b52d-7581-42cd-9e82-fb1b2cdb0043}

Name: SaveTabs
Type: extension
Version: 1.2.4
Enabled: false
ID: {f587d35c-943b-4323-8aee-cd8691df4db0}

Name: Scroll To Top
Type: extension
Version: 4.9.1
Enabled: false
ID: jid0-gRmSxW9ByuHwGjLhtXJg27YnZRs@jetpack

Name: Selection Context Search
Type: extension
Version: 5.19
Enabled: false
ID: {3923146e-98cb-472b-9c13-f6849d34d6b8}

Name: Show/Hide passwords
Type: extension
Version: 0.4
Enabled: false
ID: shpassword@shpassword.fr

Name: Social Fixer for Facebook
Type: extension
Version: 27.1.0
Enabled: false
ID: betterfacebook@mattkruse.com

Name: Stalker Mode ON
Type: extension
Version: 1.0
Enabled: false
ID: {f6df44c7-1aa0-419c-8425-2aa6a63e5161}

Name: Tab Center Redux
Type: extension
Version: 0.7.1
Enabled: false
ID: {0ad88674-2b41-4cfb-99e3-e206c74a0076}

Name: Tab Count Badge
Type: extension
Version: 0.0.3
Enabled: false
ID: {b1f2a5fa-600c-4a9a-bb5d-ec3849f1bbe7}

Name: Tab Mover
Type: extension
Version: 9
Enabled: false
ID: tab-mover@code.guido-berhoerster.org

Name: Tab Scope
Type: extension
Version: 1.6.3
Enabled: false
ID: tabscope@xuldev.org

Name: Tabhunter
Type: extension
Version: 3.3.0
Enabled: false
ID: tabhunter@ericpromislow.com

Name: Test Pilot
Type: extension
Version: 3.0.6vffecb95
Enabled: false
ID: @testpilot-addon

Name: Tip Tab
Type: extension
Version: 2.19
Enabled: false
ID: tiptab@william.wong

Name: Toggle animated GIFs
Type: extension
Version: 1.3.1
Enabled: false
ID: giftoggle@simonsoftware.se

Name: Toggle JavaScript
Type: extension
Version: 1.0
Enabled: false
ID: jid1-KYgT07tufVQH4w@jetpack

Name: Toolbox for Google Play Store™
Type: extension
Version: 2.7
Enabled: false
ID: {f7e00fda-62e6-4361-8450-a335408e1efe}

Name: Translate Web Pages
Type: extension
Version: 9.0.4
Enabled: false
ID: {036a55b4-5e72-4d05-a06c-cba2dfcc134a}

Name: Tumblr video downloader
Type: extension
Version: 1.1
Enabled: false
ID: {1837ff7c-7259-4358-a974-acf190070a6a}

Name: uBlock Origin
Type: extension
Version: 1.35.2
Enabled: false
ID: uBlock0@raymondhill.net

Name: Update Scanner
Type: extension
Version: 4.4.0
Enabled: false
ID: {c07d1a49-9894-49ff-a594-38960ede8fb9}

Name: URLs List
Type: extension
Version: 0.5.0
Enabled: false
ID: {88664789-f91e-40e1-adb9-e4e9a8c48867}

Name: Vertical Tabs Reloaded
Type: extension
Version: 0.13.1
Enabled: false
ID: verticaltabsreloaded@go-dev.de

Name: Video Downloader professional
Type: extension
Version: 1.99.5
Enabled: false
ID: ffext_basicvideoext@startpage24

Name: Video DownloadHelper
Type: extension
Version: 7.4.0
Enabled: false
ID: {b9db16a4-6edc-47ec-a1f4-b86292ed211d}

Name: VimFx
Type: extension
Version: 0.20.10
Enabled: false
ID: VimFx@akhodakivskiy.github.com

Name: Vimium
Type: extension
Version: 1.66
Enabled: false
ID: {d7742d87-e61d-4b78-b8a1-b469842139fa}

Name: Visited
Type: extension
Version: 1.13.1
Enabled: false
ID: jid0-xGZYdxpAkROWMUMfWKINyrXigBA@jetpack

Name: VivaldiFox
Type: extension
Version: 3.1
Enabled: false
ID: @vivaldi-fox

Name: Warn Before Quit
Type: extension
Version: 0.8.0
Enabled: false
ID: jid1-7OsjI9sxTAYQNg@jetpack

Name: Wayback Machine
Type: extension
Version: 1.8.6
Enabled: false
ID: wayback_machine@mozilla.org

Name: Wikipedia Peek
Type: extension
Version: 2.7.3
Enabled: false
ID: @wikipedia-peek

Name: Wikiwand: Wikipedia Modernized
Type: extension
Version: 5.1.3
Enabled: false
ID: jid1-D7momAzRw417Ag@jetpack

Name: Workspaces for Firefox
Type: extension
Version: 1.0.7
Enabled: false
ID: {f8829f14-24b7-4e17-8bde-250217de2d71}

Name: Youtube Downloader mp3
Type: extension
Version: 3.9
Enabled: false
ID: @youtube_downloader

Name: Zwipr
Type: extension
Version: 1.0
Enabled: false
ID: {eed920a7-f2f3-4aac-a494-ea4038df8f0b}

Graphics

Features
Compositing: WebRender (Software)
Asynchronous Pan/Zoom: wheel input enabled; scrollbar drag enabled; keyboard enabled; autoscroll enabled; smooth pinch-zoom enabled
WebGL 1 Driver WSI Info: EGL_VENDOR: Google Inc. (adapter LUID: 0000000000000000) EGL_VERSION: 1.5 (ANGLE 2.1.14225 git hash: 3778168311ca) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_display_semaphore_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled EGL_ANDROID_blob_cache EGL_ANDROID_recordable EGL_ANGLE_image_d3d11_texture EGL_ANGLE_create_context_backwards_compatible EGL_KHR_create_context_no_error EGL_KHR_reusable_sync EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses EGL_KHR_debug EGL_ANGLE_explicit_context EGL_ANGLE_feature_control IsWebglOutOfProcessEnabled: 0
WebGL 1 Driver Renderer: Google Inc. -- ANGLE (Software Adapter Direct3D11 vs_5_0 ps_5_0)
WebGL 1 Driver Version: OpenGL ES 2.0.0 (ANGLE 2.1.14225 git hash: 3778168311ca)
WebGL 1 Driver Extensions: GL_ANGLE_base_vertex_base_instance GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_explicit_context GL_ANGLE_explicit_context_gles1 GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_get_tex_level_parameter GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_memory_size GL_ANGLE_multi_draw GL_ANGLE_multiview_multisample GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_provoking_vertex GL_ANGLE_request_extension GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_lose_context GL_CHROMIUM_sync_query GL_EXT_EGL_image_external_wrap_modes GL_EXT_blend_func_extended GL_EXT_blend_minmax GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_draw_elements_base_vertex GL_EXT_float_blend GL_EXT_frag_depth GL_EXT_instanced_arrays GL_EXT_map_buffer_range GL_EXT_multisampled_render_to_texture GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_bptc GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_rgtc GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_KHR_no_error GL_KHR_parallel_shader_compile GL_KHR_robust_buffer_access_behavior GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_compressed_EAC_R11_signed_texture GL_OES_compressed_EAC_R11_unsigned_texture GL_OES_compressed_EAC_RG11_signed_texture GL_OES_compressed_EAC_RG11_unsigned_texture GL_OES_compressed_ETC2_RGB8_texture GL_OES_compressed_ETC2_RGBA8_texture GL_OES_compressed_ETC2_punchthroughA_RGBA8_texture GL_OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture GL_OES_compressed_ETC2_sRGB8_alpha8_texture GL_OES_compressed_ETC2_sRGB8_texture GL_OES_depth24 GL_OES_depth32 GL_OES_draw_elements_base_vertex GL_OES_element_index_uint GL_OES_fbo_render_mipmap GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_border_clamp GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_texture_stencil8 GL_OES_vertex_array_object GL_WEBGL_video_texture
WebGL 1 Extensions: ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_float_blend EXT_frag_depth EXT_shader_texture_lod EXT_sRGB EXT_texture_compression_bptc EXT_texture_compression_rgtc EXT_texture_filter_anisotropic MOZ_debug OES_element_index_uint OES_fbo_render_mipmap OES_standard_derivatives OES_texture_float OES_texture_float_linear OES_texture_half_float OES_texture_half_float_linear OES_vertex_array_object WEBGL_color_buffer_float WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context
WebGL 2 Driver WSI Info: -
WebGL 2 Driver Renderer: WebGL creation failed: * AllowWebgl2:false restricts context creation on this system. ()
WebGL 2 Driver Version: -
WebGL 2 Driver Extensions: -
WebGL 2 Extensions: -
Direct2D: Blocked for your graphics card because of unresolved driver issues.
Target Frame Rate: 60
DirectWrite: true (6.2.9200.16492)
GPU #1
Active: Yes
Description: RDPDD Chained DD
Vendor ID: 0x0000
Device ID: 0x0000
Drivers: RDPDD
Subsys ID: 00000000
RAM: 0
GPU #2
Active: No
RAM: 0
Diagnostics
AzureCanvasBackend: skia
AzureContentBackend: skia
AzureFallbackCanvasBackend: skia
CMSOutputProfile: AAAMSExpbm8CEAAAbW50clJHQiBYWVogB84AAgAJAAYAMQAAYWNzcE1TRlQAAAAASUVDIHNSR0IAAAAAAAAAAAAAAAAAAPbWAAEAAAAA0y1IUCAgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAARY3BydAAAAVAAAAAzZGVzYwAAAYQAAABsd3RwdAAAAfAAAAAUYmtwdAAAAgQAAAAUclhZWgAAAhgAAAAUZ1hZWgAAAiwAAAAUYlhZWgAAAkAAAAAUZG1uZAAAAlQAAABwZG1kZAAAAsQAAACIdnVlZAAAA0wAAACGdmlldwAAA9QAAAAkbHVtaQAAA/gAAAAUbWVhcwAABAwAAAAkdGVjaAAABDAAAAAMclRSQwAABDwAAAgMZ1RSQwAABDwAAAgMYlRSQwAABDwAAAgMdGV4dAAAAABDb3B5cmlnaHQgKGMpIDE5OTggSGV3bGV0dC1QYWNrYXJkIENvbXBhbnkAAGRlc2MAAAAAAAAAEnNSR0IgSUVDNjE5NjYtMi4xAAAAAAAAAAAAAAASc1JHQiBJRUM2MTk2Ni0yLjEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFhZWiAAAAAAAADzUQABAAAAARbMWFlaIAAAAAAAAAAAAAAAAAAAAABYWVogAAAAAAAAb6IAADj1AAADkFhZWiAAAAAAAABimQAAt4UAABjaWFlaIAAAAAAAACSgAAAPhAAAts9kZXNjAAAAAAAAABZJRUMgaHR0cDovL3d3dy5pZWMuY2gAAAAAAAAAAAAAABZJRUMgaHR0cDovL3d3dy5pZWMuY2gAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAZGVzYwAAAAAAAAAuSUVDIDYxOTY2LTIuMSBEZWZhdWx0IFJHQiBjb2xvdXIgc3BhY2UgLSBzUkdCAAAAAAAAAAAAAAAuSUVDIDYxOTY2LTIuMSBEZWZhdWx0IFJHQiBjb2xvdXIgc3BhY2UgLSBzUkdCAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGRlc2MAAAAAAAAALFJlZmVyZW5jZSBWaWV3aW5nIENvbmRpdGlvbiBpbiBJRUM2MTk2Ni0yLjEAAAAAAAAAAAAAACxSZWZlcmVuY2UgVmlld2luZyBDb25kaXRpb24gaW4gSUVDNjE5NjYtMi4xAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB2aWV3AAAAAAATpP4AFF8uABDPFAAD7cwABBMLAANcngAAAAFYWVogAAAAAABMCVYAUAAAAFcf521lYXMAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAKPAAAAAnNpZyAAAAAAQ1JUIGN1cnYAAAAAAAAEAAAAAAUACgAPABQAGQAeACMAKAAtADIANwA7AEAARQBKAE8AVABZAF4AYwBoAG0AcgB3AHwAgQCGAIsAkACVAJoAnwCkAKkArgCyALcAvADBAMYAywDQANUA2wDgAOUA6wDwAPYA+wEBAQcBDQETARkBHwElASsBMgE4AT4BRQFMAVIBWQFgAWcBbgF1AXwBgwGLAZIBmgGhAakBsQG5AcEByQHRAdkB4QHpAfIB+gIDAgwCFAIdAiYCLwI4AkECSwJUAl0CZwJxAnoChAKOApgCogKsArYCwQLLAtUC4ALrAvUDAAMLAxYDIQMtAzgDQwNPA1oDZgNyA34DigOWA6IDrgO6A8cD0wPgA+wD+QQGBBMEIAQtBDsESARVBGMEcQR+BIwEmgSoBLYExATTBOEE8AT+BQ0FHAUrBToFSQVYBWcFdwWGBZYFpgW1BcUF1QXlBfYGBgYWBicGNwZIBlkGagZ7BowGnQavBsAG0QbjBvUHBwcZBysHPQdPB2EHdAeGB5kHrAe/B9IH5Qf4CAsIHwgyCEYIWghuCIIIlgiqCL4I0gjnCPsJEAklCToJTwlkCXkJjwmkCboJzwnlCfsKEQonCj0KVApqCoEKmAquCsUK3ArzCwsLIgs5C1ELaQuAC5gLsAvIC+EL+QwSDCoMQwxcDHUMjgynDMAM2QzzDQ0NJg1ADVoNdA2ODakNww3eDfgOEw4uDkkOZA5/DpsOtg7SDu4PCQ8lD0EPXg96D5YPsw/PD+wQCRAmEEMQYRB+EJsQuRDXEPURExExEU8RbRGMEaoRyRHoEgcSJhJFEmQShBKjEsMS4xMDEyMTQxNjE4MTpBPFE+UUBhQnFEkUahSLFK0UzhTwFRIVNBVWFXgVmxW9FeAWAxYmFkkWbBaPFrIW1hb6Fx0XQRdlF4kXrhfSF/cYGxhAGGUYihivGNUY+hkgGUUZaxmRGbcZ3RoEGioaURp3Gp4axRrsGxQbOxtjG4obshvaHAIcKhxSHHscoxzMHPUdHh1HHXAdmR3DHeweFh5AHmoelB6+HukfEx8+H2kflB+/H+ogFSBBIGwgmCDEIPAhHCFIIXUhoSHOIfsiJyJVIoIiryLdIwojOCNmI5QjwiPwJB8kTSR8JKsk2iUJJTglaCWXJccl9yYnJlcmhya3JugnGCdJJ3onqyfcKA0oPyhxKKIo1CkGKTgpaymdKdAqAio1KmgqmyrPKwIrNitpK50r0SwFLDksbiyiLNctDC1BLXYtqy3hLhYuTC6CLrcu7i8kL1ovkS/HL/4wNTBsMKQw2zESMUoxgjG6MfIyKjJjMpsy1DMNM0YzfzO4M/E0KzRlNJ402DUTNU01hzXCNf02NzZyNq426TckN2A3nDfXOBQ4UDiMOMg5BTlCOX85vDn5OjY6dDqyOu87LTtrO6o76DwnPGU8pDzjPSI9YT2hPeA+ID5gPqA+4D8hP2E/oj/iQCNAZECmQOdBKUFqQaxB7kIwQnJCtUL3QzpDfUPARANER0SKRM5FEkVVRZpF3kYiRmdGq0bwRzVHe0fASAVIS0iRSNdJHUljSalJ8Eo3Sn1KxEsMS1NLmkviTCpMcky6TQJNSk2TTdxOJU5uTrdPAE9JT5NP3VAnUHFQu1EGUVBRm1HmUjFSfFLHUxNTX1OqU/ZUQlSPVNtVKFV1VcJWD1ZcVqlW91dEV5JX4FgvWH1Yy1kaWWlZuFoHWlZaplr1W0VblVvlXDVchlzWXSddeF3JXhpebF69Xw9fYV+zYAVgV2CqYPxhT2GiYfViSWKcYvBjQ2OXY+tkQGSUZOllPWWSZedmPWaSZuhnPWeTZ+loP2iWaOxpQ2maafFqSGqfavdrT2una/9sV2yvbQhtYG25bhJua27Ebx5veG/RcCtwhnDgcTpxlXHwcktypnMBc11zuHQUdHB0zHUodYV14XY+dpt2+HdWd7N4EXhueMx5KnmJeed6RnqlewR7Y3vCfCF8gXzhfUF9oX4BfmJ+wn8jf4R/5YBHgKiBCoFrgc2CMIKSgvSDV4O6hB2EgITjhUeFq4YOhnKG14c7h5+IBIhpiM6JM4mZif6KZIrKizCLlov8jGOMyo0xjZiN/45mjs6PNo+ekAaQbpDWkT+RqJIRknqS45NNk7aUIJSKlPSVX5XJljSWn5cKl3WX4JhMmLiZJJmQmfyaaJrVm0Kbr5wcnImc951kndKeQJ6unx2fi5/6oGmg2KFHobaiJqKWowajdqPmpFakx6U4pammGqaLpv2nbqfgqFKoxKk3qamqHKqPqwKrdavprFys0K1ErbiuLa6hrxavi7AAsHWw6rFgsdayS7LCszizrrQltJy1E7WKtgG2ebbwt2i34LhZuNG5SrnCuju6tbsuu6e8IbybvRW9j74KvoS+/796v/XAcMDswWfB48JfwtvDWMPUxFHEzsVLxcjGRsbDx0HHv8g9yLzJOsm5yjjKt8s2y7bMNcy1zTXNtc42zrbPN8+40DnQutE80b7SP9LB00TTxtRJ1MvVTtXR1lXW2Ndc1+DYZNjo2WzZ8dp22vvbgNwF3IrdEN2W3hzeot8p36/gNuC94UThzOJT4tvjY+Pr5HPk/OWE5g3mlucf56noMui86Ubp0Opb6uXrcOv77IbtEe2c7ijutO9A78zwWPDl8XLx//KM8xnzp/Q09ML1UPXe9m32+/eK+Bn4qPk4+cf6V/rn+3f8B/yY/Sn9uv5L/tz/bf//
Display0: 1920x1017@60Hz : RDPDD Chained DD
DisplayCount: 1
HardwareStretching: both=0 window-only=0 full-screen-only=0 none=0 error=1
Device Reset: Trigger Device Reset
ClearType Parameters: Gamma: 1.8 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 50
Decision Log
HW_COMPOSITING:
available by default
D3D11_COMPOSITING:
available by default
Blocklisted; failure code BLOCKLIST_FEATURE_FAILURE_UNKNOWN_DEVICE_VENDOR
DIRECT2D:
unavailable by default: Direct2D requires Direct3D 11 compositing
D3D11_HW_ANGLE:
unavailable by default: D3D11 compositing is disabled
disabled by env: D3D11 compositing is disabled
GPU_PROCESS:
available by default
Blocklisted; failure code BLOCKLIST_FEATURE_FAILURE_PARSE_DRIVER
WEBRENDER:
available by default
force_enabled by user: Force enabled by pref
disabled by env: Not qualified
unavailable-no-angle by runtime: ANGLE is disabled
WEBRENDER_QUALIFIED:
available by default
blocklisted by env: No qualified hardware
WEBRENDER_COMPOSITOR:
available by default
blocklisted by env: Blocklisted by gfxInfo
unavailable by runtime: No DirectComposition usage
WEBRENDER_PARTIAL:
available by default
WEBRENDER_SHADER_CACHE:
available by default
blocklisted by env: Blocklisted by gfxInfo
unavailable by runtime: WebRender disabled
WEBRENDER_OPTIMIZED_SHADERS:
available by default
blocklisted by env: Blocklisted by gfxInfo
unavailable by runtime: WebRender disabled
WEBRENDER_ANGLE:
available by default
unavailable-no-angle by runtime: ANGLE is disabled
WEBRENDER_DCOMP_PRESENT:
available by default
unavailable by env: Requires Windows 10 or later
unavailable by runtime: Requires ANGLE
WEBRENDER_SOFTWARE:
available by default
force_enabled by user: Force enabled by fission
blocklisted by env: No qualified hardware
OMTP:
disabled by default: Disabled by default
broken by runtime: OMTP is not supported with <= 2 cores
WEBGPU:
disabled by default: Disabled by default

Failure Log
(#0) Error: RenderCompositorSWGL failed mapping default framebuffer, no dt

Media

Audio Backend: (remote error)
Max Channels: 0
Preferred Sample Rate: 44100
Roundtrip latency (standard deviation): ...
Output Devices
Name: Group
Input Devices
Name: Group
Media Capabilities
Enumerate database

Environment Variables

MOZ_CRASHREPORTER_DATA_DIRECTORY: C:\Users\user\AppData\Roaming\Mozilla\Firefox\Crash Reports
MOZ_CRASHREPORTER_EVENTS_DIRECTORY: C:\Apps\FF\Data\profile\crashes\events
MOZ_CRASHREPORTER_PING_DIRECTORY: C:\Users\user\AppData\Roaming\Mozilla\Firefox\Pending Pings
MOZ_CRASHREPORTER_RESTART_ARG_0: C:\Apps\FF\App\firefox64\firefox.exe
MOZ_CRASHREPORTER_RESTART_ARG_1: -profile
MOZ_CRASHREPORTER_RESTART_ARG_2: C:\Apps\FF\Data\profile
MOZ_CRASHREPORTER_RESTART_ARG_3: -no-remote
MOZ_CRASHREPORTER_STRINGS_OVERRIDE: C:\Apps\FF\App\firefox64\browser\crashreporter-override.ini
MOZ_NO_REMOTE: 1
MOZ_PLUGIN_PATH: C:\Apps\FF\Data\plugins

Experimental Features

about:home startup cache (browser.startup.homepage.abouthome_cache.enabled): true
Cookies: SameSite=Lax by default (network.cookie.sameSite.laxByDefault): true
Cookies: SameSite=None requires secure attribute (network.cookie.sameSite.noneRequiresSecure): true
Cookies: Schemeful SameSite (network.cookie.sameSite.schemeful): true
CSS: Constructable Stylesheets (layout.css.constructable-stylesheets.enabled): false
CSS: Masonry Layout (layout.css.grid-template-masonry-value.enabled): true
Developer Tools: Color Scheme Simulation (devtools.inspector.color-scheme-simulation.enabled): true
Developer Tools: Compatibility Panel (devtools.inspector.compatibility.enabled): true
Developer Tools: Execution Context Selector (devtools.webconsole.input.context): true
Developer Tools: Service Worker debugging (devtools.debugger.features.windowless-service-workers): false
Fission (Site Isolation) (fission.autostart): true
Media: AVIF (image.avif.enabled): false
Media: JPEG XL (image.jxl.enabled): false
Multiple Picture-in-Picture Support (media.videocontrols.picture-in-picture.allow-multiple): true
Address Bar: show results during IME composition (browser.urlbar.keepPanelOpenDuringImeComposition): false
Web API: inputmode (dom.forms.inputmode): true
Web API: WebGPU (dom.webgpu.enabled): false
WebRTC Global Mute Toggles (privacy.webrtc.globalMuteToggles): false
Win32k Lockdown (security.sandbox.content.win32k-disable): false

Remote Experiments

Important Modified Preferences

accessibility.lastLoadDate: 1501853663
accessibility.typeaheadfind.flashBar: 0
browser.cache.disk.amount_written: 395903
browser.cache.disk.capacity: 942080
browser.cache.disk.filesystem_reported: 1
browser.cache.disk.hashstats_reported: 1
browser.cache.disk.smart_size_cached_value: 358400
browser.cache.disk.smart_size.first_run: false
browser.cache.disk.smart_size.use_old_max: false
browser.cache.disk.telemetry_report_ID: 43
browser.cache.frecency_experiment: 3
browser.contentblocking.category: standard
browser.display.document_color_use: 1
browser.display.focus_ring_on_anything: true
browser.display.focus_ring_width: 5
browser.display.use_document_colors: true
browser.display.use_system_colors: true
browser.places.createdDefaultQueries: true
browser.places.createdSmartBookmarks: true
browser.places.importBookmarksHTML: false
browser.places.importDefaults: false
browser.places.migratePostDataAnnotations: false
browser.places.smartBookmarksVersion: 8
browser.places.updateRecentTagsUri: false
browser.search.region: AU
browser.sessionstore.interval: 1500000
browser.sessionstore.upgradeBackup.latestBuildID: 20210604213013
browser.startup.homepage: about:blank
browser.startup.homepage_override.buildID: 20210604213013
browser.startup.homepage_override.mstone: 91.0a1
browser.startup.page: 3
browser.tabs.crashReporting.includeURL: true
browser.tabs.drawInTitlebar: false
browser.tabs.remote.autostart.disabled-because-using-a11y: true
browser.urlbar.autoFill: false
browser.urlbar.daysBeforeHidingSuggestionsPrompt: 0
browser.urlbar.lastSuggestionsPromptDate: 20170607
browser.urlbar.matchBuckets: general:5,suggestion:Infinity
browser.urlbar.oneOffSearches: false
browser.urlbar.placeholderName: DuckDuckGo
browser.urlbar.resultBuckets: {"children":[{"maxResultCount":1,"children":[{"group":"heuristicTest"},{"group":"heuristicExtension"},{"group":"heuristi
browser.urlbar.searchSuggestionsChoice: false
browser.urlbar.searchTips.shownCount: 2
browser.urlbar.showSearchSuggestionsFirst: false
browser.urlbar.suggest.searches: false
browser.urlbar.tabToSearch.onboard.interactionsLeft: 1
browser.urlbar.timesBeforeHidingSuggestionsHint: 0
browser.urlbar.tipShownCount.searchTip_onboard: 4
browser.urlbar.tipShownCount.searchTip_redirect: 1
browser.urlbar.tipShownCount.tabToSearch: 4
doh-rollout.balrog-migration-done: true
doh-rollout.doneFirstRun: true
doh-rollout.home-region: AU
dom.apps.lastUpdate.buildID: 20160716030215
dom.apps.lastUpdate.mstone: 50.0a1
dom.apps.reset-permissions: true
dom.block_download_insecure: false
dom.mozApps.runUpdate: false
dom.mozApps.used: true
dom.push.userAgentID: 0c57b9a90fb2482a8502ed8e2039ce17
dom.w3c_touch_events.expose: false
extensions.checkCompatibility: false
extensions.lastAppVersion: 91.0a1
font.internaluseonly.changed: true
font.minimum-size.x-western: 10
general.autoScroll: false
general.useragent.extra.microsoftdotnet: (.NET CLR 3.5.30729)
general.useragent.override.youtube.com: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0
gfx.crash-guard.d3d11layers.appVersion: 43.0a1
gfx.crash-guard.d3d11layers.deviceID: 0x0000
gfx.crash-guard.d3d11layers.feature-d2d: false
gfx.crash-guard.d3d11layers.feature-d3d11: false
gfx.crash-guard.status.d3d11layers: 2
gfx.direct3d.last_used_feature_level_idx: 0
gfx.direct3d.prefer_10_1: true
gfx.downloadable_fonts.otl_validation: false
gfx.driver-init.appVersion: 42.0a1
gfx.driver-init.deviceID: 0x0000
gfx.driver-init.driverVersion:
gfx.driver-init.feature-d2d: false
gfx.driver-init.feature-d3d11: false
gfx.driver-init.status: 2
gfx.webrender.all: true
gfx.webrender.blob.paint-flashing: true
gfx.webrender.debug.gpu-cache: true
gfx.webrender.enabled: true
gfx.webrender.layers-free: true
gfx.webrendest.enabled: true
identity.fxaccounts.enabled: false
idle.lastDailyNotification: 1622955809
layers.async-pan-zoom.enabled: false
layers.mlgpu.sanity-test-failed: false
media.benchmark.vp9.fps: 45
media.benchmark.vp9.versioncheck: 5
media.gmp-eme-adobe.abi: x86-msvc-x64
media.gmp-eme-adobe.lastUpdate: 1456405355
media.gmp-eme-adobe.version: 17
media.gmp-gmpopenh264.abi: x86_64-msvc-x64
media.gmp-gmpopenh264.enabled: false
media.gmp-gmpopenh264.lastUpdate: 1571387558
media.gmp-gmpopenh264.path: :\Apps\FF\Data\profile\gmp-gmpopenh264
media.gmp-gmpopenh264.version: 1.8.1.1
media.gmp-manager.buildID: 20210604213013
media.gmp-manager.lastCheck: 1622892947
media.gmp-widevinecdm.abi: x86_64-msvc-x64
media.gmp-widevinecdm.lastUpdate: 1618641096
media.gmp-widevinecdm.version: 4.10.2209.1
media.gmp.storage.version.observed: 1
media.hardware-video-decoding.failed: false
media.videocontrols.picture-in-picture.video-toggle.has-used: true
mousewheel.withcontrolkey.action: 3
network.cookie.prefsMigrated: true
network.dns.disablePrefetch: true
network.http.speculative-parallel-limit: 0
network.predictor.cleaned-up: true
network.predictor.enabled: false
network.prefetch-next: false
network.trr.blocklist_cleanup_done: true
places.database.lastMaintenance: 1622503821
places.history.expiration.transient_current_max_pages: 167683
plugin.disable_full_page_plugin_for_types: audio/3gpp,audio/3gpp2,audio/x-m4b,audio/x-m4p,video/3gpp,video/3gpp2,video/x-m4v,video/mp4,audio/mp4,application/pdf
plugin.importedState: true
plugin.state.java: 0
plugin.state.np-vmware-vmrc: 0
plugin.state.npauthz: 0
plugin.state.npgeplugin: 0
plugin.state.npgoogleupdate: 0
plugin.state.npican: 0
plugin.state.npitunes: 0
plugin.state.npmeetingjoinpluginoc: 0
plugin.state.nppicasa: 0
plugin.state.npspwrap: 0
plugin.state.npwlpg: 0
privacy.cpd.extensions-nosquint: false
privacy.donottrackheader.enabled: true
privacy.popups.showBrowserMessage: false
privacy.purge_trackers.date_in_cookie_database: 0
privacy.purge_trackers.last_purge: 1622955811895
privacy.resistFingerprinting.block_mozAddonManager: true
privacy.sanitize.migrateClearSavedPwdsOnExit: true
privacy.sanitize.migrateFx3Prefs: true
privacy.sanitize.pending: [{"id":"newtab-container","itemsToClear":[],"options":{}}]
privacy.socialtracking.notification.counter: 2
privacy.socialtracking.notification.enabled: false
privacy.socialtracking.notification.lastShown: 1567434755946
privacy.trackingprotection.introCount: 20
privacy.userContext.extension: tabby@whatsyouridea.com
security.disable_button.openCertManager: false
security.enable_java: true
security.insecure_field_warning.contextual.enabled: false
security.OCSP.disable_button.managecrl: false
security.osreauthenticator.password_last_changed_hi: 742485
security.osreauthenticator.password_last_changed_lo: 870997064
security.remote_settings.crlite_filters.checked: 1622955424
security.remote_settings.intermediates.checked: 1622955424
security.sandbox.content.tempDirSuffix: {71b394d1-b046-4dbc-be0d-c0f5432fac21}
security.sandbox.plugin.tempDirSuffix: {a103d6ec-57bf-4ac8-bdd2-4728b14357b8}
security.warn_viewing_mixed: false
services.sync.declinedEngines:
services.sync.engine.greasemonkey: true
signon.importedFromSqlite: true
signon.usage.hasEntry: true
signon.usage.lastUsed: 1605682695
storage.vacuum.last.index: 1
storage.vacuum.last.places.sqlite: 1621553401

Important Locked Preferences

fission.autostart.session: true

Places Database

Accessibility

Activated: false
Prevent Accessibility: 0
Accessible Handler Used: false
Accessibility Instantiator:

Library Versions

NSPR
Expected minimum version: 4.31
Version in use: 4.31

NSS
Expected minimum version: 3.66
Version in use: 3.66

NSSSMIME
Expected minimum version: 3.66
Version in use: 3.66

NSSSSL
Expected minimum version: 3.66
Version in use: 3.66

NSSUTIL
Expected minimum version: 3.66
Version in use: 3.66

Sandbox

Content Process Sandbox Level: 6
Effective Content Process Sandbox Level: 6
Win32k Lockdown State for Content Process: Win32k Lockdown disabled -- Operating system not supported

Startup Cache

Disk Cache Path: C:\Apps\FF\Data\profile\startupCache\startupCache.8.little
Ignore Disk Cache: false
Found Disk Cache on Init: false
Wrote to Disk Cache: true

Internationalization & Localization

Application Settings
Requested Locales: ["en-US"]
Available Locales: ["en-US"]
App Locales: ["en-US"]
Regional Preferences: ["en-AU"]
Default Locale: "en-US"
Operating System
System Locales: ["en-US"]
Regional Preferences: ["en-AU"]

Remote Debugging (Chromium Protocol)

Accepting Connections: false
URL:

Printing

Modified print settings

print_printer: HP LaserJet P2015 PCL6
print.printer_HP_LaserJet_P2015_PCL6.print_bgcolor: false
print.printer_HP_LaserJet_P2015_PCL6.print_bgimages: false
print.printer_HP_LaserJet_P2015_PCL6.print_duplex: -437918235
print.printer_HP_LaserJet_P2015_PCL6.print_edge_bottom: 0
print.printer_HP_LaserJet_P2015_PCL6.print_edge_left: 0
print.printer_HP_LaserJet_P2015_PCL6.print_edge_right: 0
print.printer_HP_LaserJet_P2015_PCL6.print_edge_top: 0
print.printer_HP_LaserJet_P2015_PCL6.print_evenpages: true
print.printer_HP_LaserJet_P2015_PCL6.print_footercenter:
print.printer_HP_LaserJet_P2015_PCL6.print_footerleft: &PT
print.printer_HP_LaserJet_P2015_PCL6.print_footerright: &D
print.printer_HP_LaserJet_P2015_PCL6.print_headercenter:
print.printer_HP_LaserJet_P2015_PCL6.print_headerleft: &T
print.printer_HP_LaserJet_P2015_PCL6.print_headerright: &U
print.printer_HP_LaserJet_P2015_PCL6.print_in_color: true
print.printer_HP_LaserJet_P2015_PCL6.print_margin_bottom: 0.5
print.printer_HP_LaserJet_P2015_PCL6.print_margin_left: 0.5
print.printer_HP_LaserJet_P2015_PCL6.print_margin_right: 0.5
print.printer_HP_LaserJet_P2015_PCL6.print_margin_top: 0.5
print.printer_HP_LaserJet_P2015_PCL6.print_oddpages: true
print.printer_HP_LaserJet_P2015_PCL6.print_orientation: 0
print.printer_HP_LaserJet_P2015_PCL6.print_page_delay: 50
print.printer_HP_LaserJet_P2015_PCL6.print_paper_data: 0
print.printer_HP_LaserJet_P2015_PCL6.print_paper_height: 11.00
print.printer_HP_LaserJet_P2015_PCL6.print_paper_name:
print.printer_HP_LaserJet_P2015_PCL6.print_paper_size_unit: 0
print.printer_HP_LaserJet_P2015_PCL6.print_paper_width: 8.50
print.printer_HP_LaserJet_P2015_PCL6.print_resolution: -437918235
print.printer_HP_LaserJet_P2015_PCL6.print_reversed: false
print.printer_HP_LaserJet_P2015_PCL6.print_scaling: 1.00
print.printer_HP_LaserJet_P2015_PCL6.print_shrink_to_fit: true
print.printer_HP_LaserJet_P2015_PCL6.print_to_file: false
print.printer_HP_LaserJet_P2015_PCL6.print_unwriteable_margin_bottom: 0
print.printer_HP_LaserJet_P2015_PCL6.print_unwriteable_margin_left: 0
print.printer_HP_LaserJet_P2015_PCL6.print_unwriteable_margin_right: 0
print.printer_HP_LaserJet_P2015_PCL6.print_unwriteable_margin_top: 0
`

Issue still exists for me after updating to:
Version 91.0a1
Build ID 20210606214208

Hi Campbell, thanks for the bug report,

Could you please go to about:config, and search for gfx.webrender.debug.gpu-cache, and set it to false. That should fix the red lines.

Then search for gfx.webrender.blob.paint-flashing and set it to false. That should fix the square overlays over the items.

Is it possible that you previously set these prefs to true and forgot about them?

(In reply to Jamie Nicol [:jnicol] from comment #4)

Hi Campbell, thanks for the bug report,

Could you please go to about:config, and search for gfx.webrender.debug.gpu-cache, and set it to false. That should fix the red lines.

Then search for gfx.webrender.blob.paint-flashing and set it to false. That should fix the square overlays over the items.

Is it possible that you previously set these prefs to true and forgot about them?

Brilliant, thankyou! All good now!

No problem. Glad it's working

My apologies, I missed that part of the description.

So to confirm, regular web pages and the main UI render correctly, but the stuff like the about page and devtools are blank? How about menus?

If you open a second main firefox window, does it render correctly?

Thanks - it seems to be getting worse. Struggling to render any windows now, but menus still work. Screenshots might help, see attached.

https://imgur.com/a/spthkcV

Let me know if you want further details.

If you set gfx.webrender.force-disabled to true in about:config, that should hopefully work around the issue while we figure out what the problem is.

I've just noticed the line Error: RenderCompositorSWGL failed mapping default framebuffer, no dt in your error log, which seems like it could be pretty important. Lee, do you know what could be going wrong here?

On my win7 PC, I could reproduce the blank window problem with sw-wr and disabling GPU process. And similar problem happened on Win10 PC.

I don't know offhand, Jamie. Let's see if Sotaro's patch to add some extra flushing helps in this scenario or not.

On latest nightly, I did not see the empty window problem on Win7.

campbell_kerr, can you check if the empty window problem is addressed with latest nightly?

Thanks - Looks like we're all good now! When I tried another win7 box I couldn't replicate the issue - I've now gone back to the original win7 box and updated FF and all looks good. Thanks!