While using VR inside a tank, vehicles "disappear" while operating an unlocked weapon and the barrel is not facing the phantom vehicle. This can most easily be tested while using the Sherman's AA 50cal; while the gun is locked and stowed, you can see all vehicles around you. However, as soon as the gun is unlocked and the crosshairs are displayed, vehicles become invisible while the barrel is facing away.  50cal is unlocked and facing the vehicles   50cal is facing away from the veh