Posted by Cantar4 on
URL: https://forum.librecad.org/Automatically-scale-grid-tp5713314p5713430.html

switching Automatic scale grid on & off, I discovered the Print-Preview screen is affected
to the point 80% of the drawing lines disappear !

coming back to the Application Preferences panel I witnessed that simply opening and closing it
triggers the bug which almost erases the preview screen...
note that the bug only performs if and only if Print-preview is active
when closing the panel.  You must close and reactivate Print-preview to see all the lines :)