Weird issues with poly editing.
After importing an obj with pieces from another file I had made, the current file I am working in became corrupt. Vertexes no longer have blue dots, and edges don't light up red when selected. The slightly annoying part is that I can tilt the viewport and they'll show up until I move my mouse pointer, at which point they will disappear. It's becoming quit impossible to work on this task because of this problem. Is there any way to fix it?