
Hello. I came across this post while looking for the same thing as you.
I think it’s wonderful that you continue to challenge yourself with new programs as a hobby(?) after retirement. In LibreCAD 2.2.2 Alpha, the snap point indicator marker is somewhat different from AutoCAD, but you can confirm that it snaps to the midpoint of a rectangle’s side. If you check only “Snap info” in the Info Cursor and turn off the other unnecessary information, the display will be less cluttered and a bit easier to read.
I haven’t used this Alpha version extensively, but it seems incomplete and has some inconveniences when used.
The toolbar background is so dark that the icons are hard to see, and I don’t know where to change the color. Window resizing also doesn’t work.
I believe that in the not‑too‑distant future we will see a more polished version of LibreCAD.