Open Bug 1734922 Opened 10 months ago Updated 10 months ago

Black Folder Pane and Quick Filter Bar if light theme is using and Appearance is set in Auto on MacOS X.


(Thunderbird :: Theme, defect)

Thunderbird 91


(Not tracked)



(Reporter: a.samets, Unassigned)


(Blocks 1 open bug)


(Keywords: regression)


(1 file)

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:94.0) Gecko/20100101 Firefox/94.0

Steps to reproduce:

Mac OS X 11.6 on Apple M1 chip.
After upgrade to Thunderbird 91 light theme is not completely light in evenings and night.

  • set light theme in thunderbird.
  • check that all is ok. Work at the day.
  • close note and open it in evening.
  • check 'black' Folder Pane and Quick Filter Bar.

Actual results:

Folder Pane and Quick Filter Bar is a black color.
DIsable and enable Light theme fixes it, but it will reproduce in the next evening.

It happens then In Mac OS X 'Appearance' is set to 'Auto' (light theme in day, dark theme in night time).

Expected results:

Light theme should be persistent, if I set it. If I want color changes I'll set System theme.

Blocks: tb91found
Keywords: regression
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