Revealing mistake: When the Enterprise begins to leave the spacedock, the background inside spacedock (behind Enterprise) seems to move in two different directions, the top moves towards the right, the bottom towards the left.
Revealing mistake: When Chang's Bird-of-prey explodes, a piece of debris can be seen bouncing back into frame because it ricocheted off the sound stage floor.





Chosen answer: There's a limit as to how much the shields can protect the ship. Depending on the force of the explosions, the ship still suffers some damage from any weapon blasts. Also, the shield only holds for so long and gradually loses it protectiveness with successive attacks, causing increasing damage to the ship.
raywest ★