Yesterday, I had this weird buggy sort of thing happen to me in AutoCAD. I saved one drawing as another and started working on it and I don't know what happened, but all of a sudden, I was only able to select about 1/4 of the objects in the drawing. There didn't seem to be any rhyme or reason to what I was able to select, either because there'd be multiple text objects that I could not select... all text is on the text layer. Linework was the same... Let's say out of 100 objects on any given layer, I could only select 25 of them. I pick and pick, but AutoCAD acts as if there was nothing there.
It happened again today, and to add to it, I did a zoom extents, and it zoomed out further than expected as if there was something out in the middle of nowhere, but there was nothing there.
If I close and re-open the drawing, the problem goes away.
Has anyone seen this before?