Adding a comment just to say that I'm under Xenial and it still happens. Even though it is marked as "Won't Fix"...
I have the problem ONLY if I quickly go from screen 1 to screen 2 and back to screen 1 (Alt-F2, Alt-F1) and I have SeaMonkey in fullscreen mode. Without apps in fullscreen, I never get that problem.
To fix the problem, I can just go to a console (Ctrl-Alt-F12) and kill compiz:
ps -ef | grep compiz
kill -QUIT <compiz-pid>
wait for it to come back (I use top to see what happens then) and then go to the 7th console (Alt-F7) to restart X11.
Windows will have been moved, but everything is then back to normal.
Adding a comment just to say that I'm under Xenial and it still happens. Even though it is marked as "Won't Fix"...
I have the problem ONLY if I quickly go from screen 1 to screen 2 and back to screen 1 (Alt-F2, Alt-F1) and I have SeaMonkey in fullscreen mode. Without apps in fullscreen, I never get that problem.
To fix the problem, I can just go to a console (Ctrl-Alt-F12) and kill compiz:
ps -ef | grep compiz
kill -QUIT <compiz-pid>
wait for it to come back (I use top to see what happens then) and then go to the 7th console (Alt-F7) to restart X11.
Windows will have been moved, but everything is then back to normal.