Yes, it looks exactly like your screenshot and I do use the “fit content” option indeed.
I updated to BTT 6.306 and it seems to help with the issue. If I do not spam the menu open/close and just use it like a normal human being, it does the trick. However if I open and close it rapidly (under one minute of wait basically), the forementioned bug re-appears and once it’s there, it does not seem to go away until BTT is restarted. I personally can live with this tiny flaw and I’m glad you could help me. Thank you!