Mark, X will register Alt+Arrowkey even if the arrow key is pressed first, but only if you press Alt very soon after. That would certainly cause this bug, but the xev output in the bug description suggests that's not what's happening.
Mark, X will register Alt+Arrowkey even if the arrow key is pressed first, but only if you press Alt very soon after. That would certainly cause this bug, but the xev output in the bug description suggests that's not what's happening.