I’ve been using Siril with the Dark Theme. I like it this way. As I became more accustomed to it, I decided to use the dark theme generally, on my Ubuntu 24.04 system. Settings->Appearance->Dark. This mostly works too. The only problem was, in the dark theme, it’s sometimes difficult to determine where one window ends and another begins. I found this irritating. It was suggested to me that I could turn on some borders with Settings->Accessibility->Seeing->HighContrast. This was an excellent improvement — except in Siril, where turning the HighContrast setting ON forces Siril into the Light Theme! (even though the Siril preference still says Dark Theme). If I turn the HighContrast setting off, then Siril reverts to the Dark Theme.
This is very annoying. Is there a workaround? This needs to be fixed.