Did you check the option:
Disable automatic Dark Mode theme switching
Maybe something in Windows is sending information to the forum to switch back to Dark?
Sorry if that doesn’t work, I don’t have Windows 10 2020H2
Did you check the option:
Disable automatic Dark Mode theme switching
Maybe something in Windows is sending information to the forum to switch back to Dark?
Sorry if that doesn’t work, I don’t have Windows 10 2020H2