STR: 1. Enable WebRender 2. Load http://as-bugzy.herokuapp.com/my_bugs 3. Enter your Bugzilla email address RESULT: The page's loading animations (the gray vertical bars) have a white horizontal line where the gray vertical bars align. See the attached screenshot. I am running macOS 10.14 Mojave on a MacBook Pro with a Retina display. I think this bug is a regression in Firefox 60 Nightly from stacking context bug 1426386. I bisected this bug to the following pushlog: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=de52bf2201a6992df26d0e7c7c1223266bcda4f9&tochange=3dea9196184747f4987cbc95d7d11b8e934a3d11
This seems fixed. Please reopen if not?
I can still reproduce this bug in 65 Nightly. With WebRender enabled, I see the white lines. With WebRender disabled, I don't see any white lines. Maybe this is an issue with display scaling? Windows recommends 250% scaling on my laptop (a Razer Blade), but I use 200%. I just tried 250% but I could still see the white lines.
I also reproduced the problem on my P50(Win10) with 120%.
Ok, it sounds very snapping related.
Sounds like next step here would be to create a reduced test case.
Here's a reduced testcase. Reproduces for me at 120%. Commenting out the transform:translateZ(0) makes it go away.
Attachment #9034711 - Attachment mime type: text/plain → text/html
Assignee: nobody → aosmond
Status: NEW → RESOLVED
Closed: 6 months ago
Resolution: --- → DUPLICATE
Duplicate of bug: 1501195
Status: RESOLVED → VERIFIED
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