1730945 - Black-and-white font color with some themes (i.e. Space Fantasy) - Intel HD Graphics 4600/Win10

Status: NEW

(Core :: Graphics: WebRender, defect, P3)

Description

[Nick]

Attachment: FFIssue.png

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:92.0) Gecko/20100101 Firefox/92.0

Steps to reproduce:

Upgraded to Firefox 91.x / 92.

Actual results:

When using Space Fantasy theme (https://addons.mozilla.org/en-US/firefox/addon/space-fantasy/), some letters are shown in black color, not all times though. After restarting FF 3-4 times, the fonts may be shown normally. They may again appear as shown in the attached image though, after using FF for some time. Some times the tabs may be shown normally but get ruined on mouse hover.

This did not happen with previous versions of FF (90.x).

Expected results:

All fonts should be shown as White, not partly black.

Comment 1

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

The Bugbug bot thinks this bug should belong to the 'Core::CSS Parsing and Computation' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.

Comment 2

[Emilio Cobos Álvarez [:emilio]]

Can you run mozregression to figure out when it started happening? If not, can you attach your about:support information here so that we can know your graphics hardware etc?

Comment 3

[Nick]

Attachment: About:Support output

Comment 4

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

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

For more information, please visit auto_nag documentation.

Comment 5

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

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

For more information, please visit auto_nag documentation.

Comment 6

[Nick]

Some additional info. Sometimes (without being able to say under what circumstances), those black spots that are shown in the first image i attached, start flashing between a normal state (where all letters are shown normally) and the state that exists in the image (1 second are shown normal, the next second black). This happens when FF's window has the focus. As soon as it looses focus, those letters are shown as black permanently.

Also, the image shown is a small part of the window. The black letters appear in other areas of the Bookmarks toolbar area and the Tabs area. Any web page though is shown without such problems.

Comment 7

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

The bug has a release status flag that shows some version of Firefox is affected, thus it will be considered confirmed.