I've opened a bug on this issue (http://www.jetbrains.net/jira/browse/IDEA-24338), but hoping someone here might have a suggestion since I'm completely blocked by this issue.
I'm running Mac OS X, IDEA 8.1.3. I've had some of the same lockup/crash/quirky behavior problems others have noted in this forum, so I decided to see how Maia was looking. I launched it this morning and tried to create a project from a Maven superpom, but it never finished loading. Figuring that it wasn't yet ready for me, I decided to go back to 8.1.3.
But when I started it, I was greeted with significant rendering problems -- an open editor tab was completely grayed out except for maybe a single character or line of code and other portions of the frame (e.g. buttons, status details, etc) were missing altogether. Mousing over or clicking on different areas might show the missing items, but only transiently. Selecting another tab causes things to disappear again. Restarting and even rebooting don't cause the problem to disappear.
Is it possible that Maia somehow placed or cached a library somewhere that 8.1.3 is picking up and using? I rebooted my computer, but the same behavior manifests so it would have to be something on the file system. What could cause this behavior?