Posted by dellus on Mar 12, 2020; 10:52pm
URL: https://forum.librecad.org/The-fillet-function-does-not-work-anymore-tp5718541p5718550.html

I have done that in the past, but I don't remember how. I would have to google for that, there also are apps for that purpose...
You might first try Options - Application Preferences - Defaults - Clear Settings - All.

Good luck.