When you are controlling a turret(currently confirmed only gunturret,) your camera usually attached to the turret and can't be moved by WASD or something. But, sometimes(no, often) it detaches from the turret and becomes able to controlled freely by WASD. Multiplayer games. Assault. Maybe other game modes(I haven't tested yet.) Any number of players in a game.
If this bug is going to be fixed at next patch, then sorry for spamming here
