I use spaces with 10.9. I run a few applications in full screen mode. While focused on an application in full screen mode every minute or so I switched back to the first space. This happens with no input on my behalf.
I suspected it was an application in the background taking focus. I shut down all applications that do this and have also disabled space switching on application focus. After a reset the issue persists.
I noticed that the tool bar glitches out after the switch happens. It feels like a bug because when the application is not in full screen mode the icons on my desktop will disappear for a split second and then reappear. This seems to be happening with the same frequency as the space switching issue. Has anyone en-counted this? Is there a fix? It's driving me nuts!