In IntelliJ 12, I used to have problems where the IDE would crash on "Find Usages".
After each crash, though, I could simply re-start the IDE and all of my changes would have been saved.
In IntelliJ 13, I had a similar problem and after re-starting the IDE, my changes had NOT been saved!
Did something change in the autosave behavior between 12 and 13? Is IntelliJ supposed to autosave before actions like Find Usages?