Thank you very much for the report and I am very sorry for the experience!
At the moment, we are having one more similar report from another client. Unfortunately, we are still unable to identify the problem.
I'm wondering whether you can help us with a few tests?
1. Try to perform a Preferences Cleaning
2. Install another Archicad language version and see if the issue also happens there
Looking forward to hearing from you!
Technical Support Engineer