I haven't found anything on this, but this only happens when I pull my MBP off of my external monitor. About half of the time when I unplug my Mac, the mouse pointer will change or completely disappear after I re-open my mac, and I have to log out, then re-log in to fix the issue. It has been jumbled letters, the rainbow spinning thing (but jumbled), and other random things. I'm using a magic mouse and apple bluetooth keyboard, so I'm not sure why these change on me.
Any ideas?
Any ideas?