Hi Alex

This should help:

https://support.mozilla.org/en-US/questions/1518730#answer-1744477

Hi Alex,

We're aware of this issue and the team is going to roll out a dot release later this week to fix this. In the meantime, the workaround is to use the built-in dark theme or the system theme.

Please check out the Unresolved section from our 140 release notes for more information.

Hello,

The issue should be fixed with the 140.0.1 release. Please update your Firefox and let us know how it goes!

Hi Alex,

Just checking in to make sure if all is good now?