Posted by dxli on
URL: https://forum.librecad.org/Line-is-invisible-while-drawing-or-editing-tp5712370p5712377.html

Keep preview color either black or white

Select the one with larger difference in r,g, and b

ravas wrote

The white background is the problem.
Change it to black and you will see the preview.
This is something that needs to be fixed.