Beyond the Farthest Star - S1-E1
Other mistake: When showing Scotty on the bridge, some of the frames show more of his body than others. In those frames, you can see that he lacks legs.
Other mistake: At the beginning of the episode, there are a few sequences with police cars going at notable speed down the streets of New York. In a few instances, you can see people gathered in street corners, looking at the filming. One egregious example is when the criminals loading the van are startled by the sirens. In the following shot, two bystanders look at the car, then turn towards the camera, and one even takes a few steps back to get out of frame. (00:03:40)