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.