mouse cursor upper left corner bug
If you guide the mouse pointer to the upper left corner with the keyboard and then try to move it away from there with the actual mouse you 'll notice that you CAN'T. The pointer will keep returning to the upper left corner until you move it away from there with the keyboard. This bug is confirmed on both Windowed and Fullscreen mode in Linux and Windows with SDL.
Ticket imported from: #581473. Ticket imported from: bugs/348.