Posted by dellus on
URL: https://forum.librecad.org/Can-no-longer-select-most-objects-with-mouse-pointer-tp5717668p5717669.html

Only being able to select with a window also happens when you have an image in the background. You then always select the image, even if it's layer is locked. You can only prevent this by making the layer invisible.
I would try to find out which layer is the troublemaker.