Posted by DaoudaW on Aug 18, 2017; 9:56pm
URL: https://forum.librecad.org/Select-tool-not-working-tp5715255p5715258.html

That explains what is happening, but not why...

If I have the parallel tool selected and approach a line (yep, just a plain old line) with the cursor I should get a preview of a parallel line. Sometimes I do, mostly I don't.  If I have the trim tool selected, it says 'Select limiting entity', when I approach a line nothing happens.  When I click the mouse, nothing!