Screen flashes black
When opening a new tab screen flashes black. Also when visiting sites Firefox opens in dark mode.
Opaite Mbohovái (2)
Hi
Firefox now harmonises more elements with your toolbar theme. When the text color on your background tabs is light/white, it triggers Firefox to use a dark background on menus, the sidebar, the Library window, and various built-in pages. Firefox also signals sites that you have a dark theme preference.
You can download a different theme from https://addons.mozilla.org.
I hope that this helps.
The dark mode nonsense can be fixed by choosing the right theme or changing a preference. https://support.mozilla.org/en-US/questions/1364418#answer-1474290