User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:72.0) Gecko/20100101 Firefox/72.0

Steps to reproduce:

https://codepen.io/antxzq/full/ExxvPOV

Actual results:

Black dot showing during transition
mix-blend-mode: color-dodge;

Expected results:

Transition should run without black dot in the middle of transition

Works fine if I run Firefox on dedicated GPU (NVIDIA)
Breaks on Intel card

Also reproduces on Linux + Intel.

Can you update to Intel 10.18.10.5100 driver, "Date: 1/10/2020" and see if this helps? Your current 10.18.10.5069 driver is from 2018.

Yes it works fine on Intel 10.18.10.5100 in Windows
On Linux black dot still appears (Latest Firefox Nightly)

Update
Excuse me
I rebooted Windows 10 and on the latest driver (10.18.10.5100) black dot still appears

Is this still occurring?

(In reply to Glenn Watson [:gw] from comment #7)

Is this still occurring?

Yes
https://youtu.be/1wKG9K5feXU

fedora:fedora/36/x86_64/silverblue
Version: 36.20220817.0 (2022-08-17T00:42:22Z)
BaseCommit: 725a2fc3488c2b7d11fe51fbb3b5c449490b1e4672f52f2143e1059cbbb9ed6c

Name Firefox
Version 103.0.2
Build ID 20220808125904
Distribution ID mozilla-flatpak
Update Directory
/app/lib/firefox
Update History
Update Channel release
User Agent Mozilla/5.0 (X11; Linux x86_64; rv:103.0) Gecko/20100101 Firefox/103.0
OS Linux 5.18.17-200.fc36.x86_64 #1 SMP PREEMPT_DYNAMIC Thu Aug 11 14:36:06 UTC 2022

Added fresh firefox info

Just checked on my new pc. The same bug appears on intel uhd 770

VGA compatible controller: Intel Corporation Raptor Lake-S GT1 [UHD Graphics 770] (rev 04)