When the body is thrown from the car, it rolls to the side of the road, facing left. In the next shot the body is facing skywards.
When Vincent fights the alien outside Cyrus Stone's home, there are four aliens and Vincent in the closeup shot. The scene cuts to a long shot and there is only Vincent and one alien to be seen. The other three come into shot from different angles.
When the alien was climbing the utility pole to connect the regeneration van, the pole could be seen wobbling back and forth suggesting it was just a prop not securely planted in the ground as a real utility pole would have been.