2) At the Plaza Hotel, Gatsby loses his temper and a strand of hair falls on his forehead. He takes both hands to button his jacket and when the angle changes his hair is brushed. His hands were too busy for him to do it between shots.
6) During the meal where Gatsby is about to say that he and Daisy are in love (before the trip to NY), Daisy’s fringe is messed up in the wide angles, but perfectly brushed in the close ups. This changes back and forth.
7) While Gatsby says the “you can repeat the past” speech, Nick is standing against a column. Then the shot changes to a wide angle where he starts to walk away. Then, suddenly, the previous angle is used and Nick is back next to the column for the rest of the scene.
13) Trains of various types appear in several shots but the trains shown – likely all CGI – are completely unlike any trains that were in use in New York in the 1920’s or in any other era. They appear to be based on Australian prototypes and their design differs significantly from American trains.
16) When Nick meets Gatsby at the party, the amount of confetti on his shoulder and hair changes between frames, sometimes appearing or disappearing on the same spot, depending on which angle is shown.
19) When Tom and Nick get off the train and go to Wilson’s shop, in a close up of Tom’s face you see him look up toward the window (looking for Myrtle). After that it cuts to a wide shot and you can see Tom in the background repeating what he did in the close up.
21) The movie takes place in the summer of 1922. They played Rhapsody in Blue, which wasn’t written till 1924. The bandleader is obviously Cab Calloway. Cab Calloway’s first recordings with the Missourians weren’t until 1928. “Oh! You Have No Idea” also wasn’t recorded until 1928, and it was sung by Sophie Tucker, not Josephine Baker (although they do credit Ms. Tucker in the final credits).
22) The “French” phone shown as they talk about the intrusive unwanted guest calling Tom wasn’t invented until about the mid-30’s. In 1922, you still had to hold the candlestick phone in one hand and talk into the mouthpiece while holding the earpiece up to your ear.
23) Early in the film Tom brings Nick to meet with his mistress Myrtle – and set Nick up for some drinking and debauchery. While waiting for Tom to come out of the bedroom Nick is sitting in a small parlor with Myrtle’s dog. In the first wide shot we see the dog licking an empty plate. Cut to an expression shot of Nick staring awkwardly, then a close-up of the dog – but now a small pile of dog food has appeared on the right side of the plate. Another reaction shot of Nick, then back to the dog – but the food has moved to the left side of his plate.