1973978 - After updating firefox from 139.0.4 to 140.0 the sidebar bookmarks turn black in dark mode and cannot be read

Status: RESOLVED DUPLICATE of bug 1971487

(Firefox :: Sidebar, defect)

Description

[Jim]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0

Steps to reproduce:

I upgraded firefox to version 140. My pc is set to dark theme (windows 10 64 bit) firefox was set to dark theme also. The only extensions I use are Ad Block Plus and fox bubbles theme, video download helper. Thats it

Actual results:

bookmarks sidebar text appeared black and unable to read upon restarting firefox after the update. Can't turn the text white.Had to revert backwards to version 139.0.4. Issue resolved. Cannot update firefox because of this. Now I keep getting profile errors every time I start my pc.

Expected results:

text in sidebar should stay white bookmarks in sidebar should stay white in dark mode after updating firefox. There is no workaround for me.

Comment 1

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

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

Comment 2

[Jim]

I should mention I have Hide shorts from youtube installed also.

Comment 5

[Jim]

Will I need to wait for the next version and skip the 140 because I can't use it like that.

Comment 6

[Monica Chiorean]

Verified as unreproducible on Ubuntu24 using latest Firefox build 140.0.1(20250625213854)

Comment 7

[Kelly Cochrane [:kcochrane]]

https://www-dev.allizom.org/en-US/firefox/140.0.1/releasenotes/
A dot release (140.0.1) should be available with a fix for the issue

Comment 8

[Jim]

Verified Solved 140.0.1 fixes the issue Thank You.