Continuity mistake: During appetizers, John Leguizamo's assistant puts her work phone on the table to let him know she is resigning. Leguizamo is holding his glass when the camera is behind him, and a spoon when he's seen from the front. (00:13:10)
Revealing mistake: The very first shot of the movie, supposedly of Anya Taylor-Joy lighting a cigarette, does not match the following shot on the pier; the cigarette appears to be black and with a brand sleeve instead of the normal one she is smoking. The background confusingly looks more like an interior than the pier she is standing on, and the lighter is a common Bic-style one instead of the Zippo she is using also later in the movie. That's because it's actually stock footage. You can literally find the clip yourself on Shutterstock and similar websites, by the description "Close-up of the silhouette of a woman's face sticking a cigarette into her lips, igniting her with a lighter, and exhaling smoke. The grim concept of the harm of smoking in a low key." (00:01:00)
Other mistake: During the dinner Slowik reveals that his restaurant does not have nor serve bread of any kind. Towards the end of the movie Margot requests that he make her a cheeseburger, which he does. Where did the buns come from?
Suggested correction: I just watched through the scene. The chef never once says that the restaurant has no bread. He only states that the guests will not be getting bread as part of this specific meal plan. Furthermore, we actually see a plate of bread at the start of the course, the dude-bro customers ask for bread since they know the chef has it, the notecard specifically discusses the bread that was made at the restaurant but won't be served, and another customer actually even specifically notes that the restaurant is known for their high-quality bread. Every single indication is that the chef absolutely has bread and is simply withholding it due to the theme of his dinner that night.
Suggested correction: He didn't say they didn't have bread. He stated THEY wouldn't get bread for that evening, since it's a common man's staple, and they are not the common man. So, they get a breadless bread plate with nothing but dipping sauces.
Continuity mistake: During the fourth course, after the gunshot happens, all the blood on the floor and kitchen bench disappears when the plates are about to be served. (00:42:12)
