I normally only use dark mode between 20:00 and 6:00 or when battery saver is enabled. When I tried turning dark mode on manually while charging though, it switched off automatically after a few seconds, no matter how many times I try to turn dark mode on. This happens both below and above the automatic battery saver percentage.
After disconnecting power, dark mode works fine, but when plugging in again, it immediately turns off dark mode and the bug from the paragraph above happens again.
Edit: it happens as well when the phone isn’t charging, but it takes way longer before dark mode is turned off automatically. It might be a red herring, but I suspect it might have something to do with the battery percentage changing.
Dark mode works fine at night, but when I tried to manually turn it on around noon, it kept turning off again.
I think that for now I found a workaround, though it’s not perfect. I can turn on battery saver manually, which also turns on dark mode. This one does keep dark mode activated.
I don’t know if the schedule is to blame, but it would be nice if you could also manually turn on dark mode, even when there’s a schedule that’s set.