Well that’s that then. I also have no idea what to try anymore… I guess you’ll just have to wait until some random update fixes the issue. Sorry.
Edit: Since you reinstalled everything, I think it could be some cache on your system that went bad. That would explain why both the Flatpak and native versions don’t work and why the rest of your system works. But I have no idea where that cache might be…
I recently tried to do that but after hours of trying l had to give up. If there’s a way, I’d really like to know too.