OK, here's a new one on me (see attached jpgs). This just started yesterday - happens in parts and assemblies. Sometimes I'll try to place a dimension and a square appears where the number should be. If I rotate the view now you can see that the dimension looks like an extrude! I've seen this happen with several dimensions at once - meaning that this seems to affect dimensions after they're made. Thoughts? (Running SW Premiun x64 2013 sp 3)
What is your graphics card?
Have you had any automatic updates to the PC?
when thing just start something changed to the PC like new dll's, programs, or to many programs running sucking up video ram.