AnthillSudoku

While here https://github.com/thunderbird/thunderbird-android/issues/7856 the issue already came out in the comments, the submitter asked for more colors and did not focus on black theme

> As a temporary workaround, uninstalling v8.3 and then installing v8.2 may work. If this solves the problem, I will issue a fix release later. downgrading to 8.2 works on...

Uninstalling and installing 8.4 solves the issue. Installing 8.3 and updating to 8.4 does not fix it, but it works after clearing the data's app.

After 3 weeks the cookie button reappeared with the same issue. To fix it you have to clear the app's data again. It sounds like the cookie is valid for...