Posted by LordOfBikes on
URL: https://forum.librecad.org/Old-Autocad-user-struggling-tp5721762p5721771.html

Welcome zoneblue!

Not sure what you mean with object tracking.
What you can try to snap on imaginary intersections is what we call construction layer in LibreCAD.
You can toggle construction layer in the layer list with the # icon.
This works for lines only and extends them to infinity, so you will have a real intersection to snap on.
Toggle construction layer off again switches lines back to their real length.

Concerning selection issues your description is too vague. I'm not aware, that there are issues related with macOS.
Possibly this is caused by images in the drawing? You may try Draft mode then, which opts out the image, showing its bounding box only.
Some tools, when active, also prohibit to select entities they don't support. E.g. polylines, ellipses or splines do not support all Modify tools and therefore they can't be selected when the tools are active.

Watch the command history box, there you will find messages for failed actions sometimes.