Deliberate mistake: When Deckard wakes up in Wallace Corporation, there is a wide shot of the platform he is on. All four corners of the platform are empty in the wide shot. Deckard then looks at Wallace's visual aids as they float away, and then realises Wallace is standing in the corner directly facing where he is sitting, speaking to him. This corner was empty in the wide shot, with no sign of Wallace. Wallace could not have entered in between shots because Deckard would have seen him approaching or at the very least, heard his footsteps. This was likely done intentionally as to not give Wallace's reveal away too early. (02:08:55)
Deliberate mistake: During the fight on the ship, Lin and the others are holding Andre over the core before he falls into it. And suddenly the ship just starts exploding and crashing for no reason what so ever. It just suddenly happens to add tension to the scene. (01:33:45)