Revealing mistake: Just after Aurora finds out that Jim woke her up, she runs around the ship. When she finishes the run, she comes across a dead end and the shot cuts to Jim sitting in front of CCTV monitors. If you look carefully, her movements on the middle monitor do not match the two either side of it - a badly-synced video rather than a live CCTV feed. (01:04:00)mhumphris
Revealing mistake: When they are in the hospital van, taking the senator to triage, and they receive fire from the helicopter, one announces that "Randall is dead" referring to the young man in the back of the van. It then cuts to his corpse - however, a split second before the scene changes away from his face, his eyes move towards the camera. (00:56:35)
Revealing mistake: During the scene near the end, at the climax of the film, when Ed is holding onto Janet for dear life outside her bedroom window, as Lorraine rushes over and pulls them back into the house, 'Janet' is a dummy.
Revealing mistake: Towards the end of the movie, the principal puts on his hat which turns his hair green. But you can see the green paint has already been applied before he puts his hat on.
Revealing mistake: After Jyn has retrieved the data file containing the Death Star plans, Krennic is shown walking in a hallway with two other Death Troopers and pushes a button to open a door. The door begins to open before Krennic actually pushes the button to open it. While his hand is not seen touching the button, the sound of the button being pressed is still heard. (01:51:10)Casual Person
Revealing mistake: In the opening scenes, we see a very pregnant Draka reclining on a bed of animal hides as Durotan watches over her. In the extreme closeup, we see Draka twitch her lips, and her small tusks flex from side-to-side with her lips, instead of remaining firmly aligned with her jaw as they should.Charles Austin Miller
Revealing mistake: When the Creature is telling Louis the "Bat Story," the Creature is holding a burning torch in its right hand against a wholly-dark background. It becomes apparent that the shots of the creature are actually Dutch Angle shots (the angle of the camera is rotated about 45°), because the smoke from the torch is not rising straight upwards; rather, the smoke is rising at a 45° angle toward the upper left corner of the screen.