Well, of course, X11/DirectX being so easy, there are n-1/n changes of being on the wrong screen (if you have n screen).
But at least, you can move and it will remember the position.
(cherry picked from commit 29b82ab8d1fb740b4be0d6a0d142a107ffe7be19)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>