1773064 - Purple header on addons.mozilla.org partially disappears after scrolling down and back up

Status: RESOLVED DUPLICATE of bug 1772867

(Core :: Graphics: WebRender, defect)

Description

[Markus Stange [:mstange]]

(This might be a duplicate of bug 1772867.)

Steps to reproduce:

1. Go to https://addons.mozilla.org/en-CA/firefox/addon/testcase-reducer/
2. Scroll down until the "Other popular extensions" box is in the top half of the viewport.
3. Move your mouse over one of the extensions in that box, to trigger the hover effect.
4. Scroll back up to the top of the page.

Expected results:
The purple header should be in the same state as you left it.

Actual results:
After scrolling back up, the purple header is gone and replaced with the light gray page background color.

greg on Matrix got this regression range: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=3128c6548f3d67102b3ba095a9a207bd29f0f17d&tochange=ebe5a430029fb71991ea327ded3d96de0c5b98e6

Comment 1

[Brad Werth [:bradwerth]]

I can reproduce this, inconsistently. I agree that it may be another sighting of Bug 1772867.

Comment 2

[Markus Stange [:mstange]]

Attachment: screen recording

Comment 3

[BugBot [:suhaib / :marco/ :calixte]]

Set release status flags based on info from the regressing bug 1731136

Comment 4

[Alex Cornestean]

The issue was reproducible on Windows 10 x64 and Ubuntu 16.04 LTS as well, up until yesterday's Nightly - 103.0a1/Build ID 20220608214824

On today's Nightly (103.0a1/Build ID 20220609065921) I cannot reproduce the issue anymore on either OSes.

Comment 5

[Alice0775 White]

Fixed range:
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=f46a69b06fc27af22338d655732dd637fb9e2053&tochange=d68d487f283810647232dd3b0c363a2f86586205

Bug 1772867 seems to fix this issue.