I was watching one of my a allied M4 - 75mm tank fire the rockets on his turret, he was saying that when you move your turret to aim on a target. That the rockets would still fire straight ahead. Even thought he was aiming away from the front / straight ahead position.
They appear to be attached to the turret not the hull of the M4 tank.
This might be another bug, If not.
Then why are they firing straight ahead?