Same Problem here.
The client frezzes directly eating al lot of CPU. It was working all fine, until i updated my debian to bookworm (12) some 2 weeks ago. I didn’t change anything at the server, so this has to be a bug in the client packed with debian.
The client crashes directly with startup, and I can only kill it. When I start the client from the terminal there are no error messages, I also tried with --logwindow, the dialog about logging opens, but is frozen, and no logfiles are written.
Unfortunately I don’t have the time right now for more debugging, but help would be highly welcome.