When using the mouse to control the turret, it works as advertised. When supplies are out, mouse cursor is enabled (as if the clipboard was open) and I cannot move the turret or fire, the joystick still does operate it though. Once the supplies are gone, mouse cursor disappears and things are back to normal (turret control). Other users have reported the same. I ahve double check the mode etc. it is supplies related. Repeatable in tank and wirble.