John Schoenick [:johns] Reporter
	Description • 9 years ago

- Nightly
- Linux x64
- Fresh profile
- layers.acceleration.force-enabled -> true
- layers.async-pan-zoom.enabled -> true (default on nightly)

Load:
https://github.com/ValveSoftware/source-sdk-2013/blob/master/mp/src/devtools/makefile_base_posix.mak#L116

Scroll up and down

Result:
Erroneous black background

Screenshot:
https://nemu.pointysoftware.net/sink/snapshot-1450376068.png

Does NOT reproduce if layers.async-pan-zoom.enabled -> false

	Kartikaya Gupta (email:kats@mozilla.staktrace.com)
	Comment 1 • 9 years ago

Presumably this also doesn't happen with layers.acceleration.force-enabled set to false (default)?

	John Schoenick [:johns] Reporter
	Comment 2 • 9 years ago

(In reply to Kartikaya Gupta (email:kats@mozilla.com) from comment #1)
> Presumably this also doesn't happen with layers.acceleration.force-enabled
> set to false (default)?

Yea, works fine without acceleration.

	Bryan Clark (DevTools PM) [:clarkbw]
	Comment 3 • 8 years ago

Seeing a report of this on twitter: https://twitter.com/johndrinkwater/status/771321501014523905
I believe it is on Linux.
I've tested on OS X and Windows and can't reproduce the issue.  The page in question is this one: https://community.letsencrypt.org/t/which-browsers-and-operating-systems-support-lets-encrypt/4394 and obviously twitter itself.