Over the course of my ownership of a MacBook Pro running Lion, I've had an extremely odd bug occur somewhat sporadically. It rarely occurs, but when it does, the following effects become apparent:
- I can no longer switch spaces using trackpad gestures, but I can using keyboard shortcuts.
- Dashboard becomes inaccessible without using Mission Control; only the main spaces can be moved through with the shortcut keys.
- When moving between spaces, all easing is gone from the transition animations. The animation seems more like it was in Snow Leopard and prior.
I really have no idea what could possibly cause this, and even though it's only happened to me four or five times, it's quite annoying since I use Spaces a lot. The only way I've found to resolve the problem was restarting the entire OS. Has anyone else had this happen to them? If so, do you know of a fix?