Other mistake: Truck chase scene, the driver-side fender changes color. Starts as red then changes to blue. (00:18:27 - 00:20:10)
Other mistake: After the final battle, the protagonists simply leave the scene and the remains of the T-800 and Rev9 behind. Sarah should've known by now that letting even the smallest part of a Terminator to be fallen into bad/incompetent hands could lead to disastrous consequences for the future of mankind. Being obsessed and even paranoid about future and fate, it's very unlikely that she could just go away like that, calling it a day before destroying all the present time traits of the Legion.
Suggested correction: Sarah knows that both machines have been destroyed by Grace's power source. Or she may have simply retrieved any leftover parts off-screen.
Other mistake: When the movie begins and a Terminator walks on the beach, there's a car framework in front. His leg clips through it. CGI glitch there. (00:02:38)
