1792353 - Hardware acceleration is making Firefox tab bar glitch in Windows 10

Status: UNCONFIRMED

(Core :: Graphics: WebRender, defect, P2)

Description

[anonymousknull]

Attachment: fox.png

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:105.0) Gecko/20100101 Firefox/105.0

Steps to reproduce:

1. Just opened my Firefox.
2. Sometimes when I hover the mouse on tab bar after opening a a new tab.

Actual results:

1. The tab bar is not properly rendered. The currently opened tab shadows were missing.
2. The tab bar blinks or have trouble rendering properly for a few seconds. I have been facing this same problem with Firefox for months.

Expected results:

The tab bar should render properly and not blink when I open a new tab and hover my mouse over tabs. Those problems instantly go away when I turn off hardware acceleration so definitely related to hardware acceleration.

Comment 1

[anonymousknull]

Update - Not only tabs bar, it is also making some websites glitch. For example when I click on my photo in Bugzilla page and hover over my profile or my activity, the profile photo icon just disappears. This does not happen when I turn hardware acceleration off.

Comment 2

[anonymousknull]

Attachment: about:support

Comment 3

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

The Bugbug bot thinks this bug should belong to the 'Core::Graphics' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 4

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

The severity field is not set for this bug.
:bhood, could you have a look please?

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