Here’s a strange one:
I am running version 3.2.7
I normally use Night Black as my theme. If I am on the Progress screen and I rotate my phone from portrait to landscape orientation, the theme switches to Dark Blue. It remains that way, even on other screens and in both orientations, until I exit the program and return. The settings still say the theme is set to Night Black. I can also switch it back by changing the theme from Night Black to something else and then back to Night Black. This doesn’t happen if I do the initial rotation while on the home screen.
A similar thing happens if I start with the theme set to Pearl White, except then it changes the theme to Night Black.
If I start with the theme set to Dark Blue, no change happens when I rotate the phone.
The behavior is consistent. It does it every time.