Deliberate mistake: The oval mirror was in a depressed wall yet was able to reflect a window within the adjacent depressed wall. (00:18:23)
Deliberate mistake: Kurt was close to the passenger side when Malik shot him from the opposite side of the car, but he fell backwards some distance from the car (and not from the force of the bullet). (01:24:40)
Deliberate mistake: After Sam freed Gary from being tied up by the aliens, Gary pulled off the cast he got earlier that day and was able to use his left arm as though it had never been broken. (00:45:43)
Deliberate mistake: Evie digs a box out of the greenhouse dirt, but no dirt falls off the box, and the box is clean when she moves it onto her lap. (00:09:00)
Deliberate mistake: When the girls take out the Pepsis, the bottles keep turning around between shots so the logo is always facing the camera.
Deliberate mistake: The movie reprises the mid-credits scene of Spiderman: No Way Home. However, it's a reshoot, since the delivery of the lines and the flow of the conversation are different, and so is the way Eddie returns to the SSU from the MCU. Instead of dissolving into thin air on the spot because of Strange's spell (like everyone else), here he gets violently sucked in by a portal. Also, in No Way Home, he was leaving behind a seedling of his symbiote on the counter of the MCU bar, but in this movie this happens in his own universe.