Dear Essam,
Thank you very much for the report and I am very sorry about the issue!
I looked for a similar record, but I was unable to find it. My suggestion is to perform a Preferences Cleaning (
https://helpcenter.graphisoft.com/knowledgebase/25464/). This will reset the Work Environment, and hopefully, the issue will go away afterward.
Please let me know if it helps. Thank you very much!
Best regards,
Minh
Minh Nguyen
Technical Support Engineer
GRAPHISOFT