Continuity mistake: When Kat and the protagonist have dinner, his hands swap between crossed or not depending on the shot. (00:28:32)
Continuity mistake: The protagonist, Neil and Kat are in the back of the yellow ambulance in the parking garage. Neil checks on Kat, after that he removes plastic gloves from his hands and throws them into the trash right next to him, 2 cuts later he again crumples a pair of plastic gloves. (01:46:15)
Continuity mistake: While Kat is seated on her bed on board of the yacht in her bedroom and then Sator comes in to throw her a pillow, this one bounces on the bed and falls on the floor. After two shots, the pillow is inexplicably on the bed above two other pillows next to Kat. (01:03:48)
Continuity mistake: In the highway chase scene where Sator reaches the Protagonist threatening to shoot Kat if he doesn't give him the case with the Plutonium-241, he lowers the window, but when he's watching the inverted car overturned which is going to get up and move backwards, the window is closed. Then when he's going to give the case to Sator, the window is lowered again. (01:19:52)
Continuity mistake: When the protagonist's car overturns, the wide angle shows his mask on. In the immediate close-up it's off, and he is placing it back on his mouth. (01:34:11)
Continuity mistake: When the Protagonist gives the case to Sator in the car chase sequence, and he and his men exit from the Audi and get on the other car, Audi's window is first slightly lowered and then up in two different shots.
Continuity mistake: When the Protagonist fights against the inverted man inside the freeport just after the plane crash, at a certain point the inverted man kicks the gun away, making it fall. The gun in the background changes position and distance in two different shots.
Continuity mistake: When Sator is on the highway looking for the Plutonium-241, he's seen coming out from the car and then closing the door, but after he checks in the BMW's glove box and returns to his car, the car door is open without anyone touching it. (01:31:58 - 01:32:49)
Continuity mistake: When the Protagonist inverts himself and gets into the Saab - which is the car that overturned in the previous chase scene on the highway - you can see the car's tires resting first on branch lines' tracks, but in the next shot the tracks are gone and the ground is dusty. (01:31:41)
Continuity mistake: When Sator is in the blue room after walking through the turnstile, he picks up Kat, puts her against the window, counts down from three to one and shoots her. Whilst he is counting down, he has his hand on Kat's shoulder. The camera then changes to a different angle where his hand is now on Kat's upper arm, and then moves onto her shoulder. Sator then pulls Kat away from the window with his hand on her upper arm. (01:24:58)
Continuity mistake: Just after the interrogation has been shown from Sator's perspective, it cuts back to the Protagonist and the other soldiers in the present. There is a shot of a medic looking over Kat, where his left hand is shown placing his gun on the ground. It then cuts to a different angle where his left hand is now placed over Kat's stomach. (01:25:41)
Continuity mistake: The Protagonist and Priya are walking along a pathway in a park whilst talking about the creator of the algorithm. There are multiple points in this scene where the direction of their head changes between cuts. When the Protagonist says "The past", Priya is looking forwards, but when the shot cuts, she is looking more to the left. Later, Priya says "Nine sets of the most closely guarded materials in the world" and the Protagonist is shown looking at her, but when the shot cuts, he is suddenly looking forwards. She then says "The best hiding place possible" looking at the Protagonist, but is then looking forwards in the next shot. Seconds after that, when she says "Find and assemble the algorithm" she is looking at the Protagonist, but is then shown looking forwards when the shot cuts. After the Protagonist asks why they chose Sator, Priya replies looking at the Protagonist, then looking forwards, then looking slightly to the left, then back to looking forwards in the next shot. (01:47:55)
Continuity mistake: When the bodyguards begin to pull the Protagonist and Kat out of the inverted vehicle after stopping it, Volkov is the only person who is first shown grabbing onto the Protagonist to try and pull him out. It then cuts to a closer shot, and a second bodyguard has suddenly appeared, to help Volkov pull the Protagonist out of the vehicle. (01:21:57)
Continuity mistake: When the Protagonist and Neil first see the inverted vehicle driving backwards towards them, there is a bridge (with an Alexela sign) shown in front of them and just ahead of the bridge is a gas station shown to the right of shot. It then cuts back to the Protagonist and Neil, where Neil asks "The hell is that?" and when it cuts back to outside the windscreen again, the bridge (with the Alexela sign) and the gas station are no longer visible, presumably having driven past them. It then cuts to a shot focusing on the Protagonist, and when the shot cuts back to the inverted vehicle bumping into the wing mirror, they are suddenly behind the bridge and gas station again and are yet to drive past it. (01:18:30)
Continuity mistake: When the Protagonist and Neil walk into the two rooms with the turnstile in the Oslo Freeport, just after the Protagonist tells Neil not to touch the bullet holes in the window, Neil asks "What the hell happened here." At this point, his head is turned about 90° to the right. In the next shot, his head is turned more forwards and much less to the right. (00:44:50)
Continuity mistake: In Stalsk-12, Wheeler and a blue team soldier take cover inside a house in which chunks of rubble have been blown out of the wall. When the pieces of rubble begin to reassemble back into the wall, Wheeler runs out and the soldier attempts to run out but gets sealed back in. Right after Wheeler runs out of the hole, and the soldier begins screaming, he is shown standing upright. But in the next shot, right before the rubble chunks go back into the wall, the soldier can be seen now kneeling over the hole in the wall. (02:05:45)
Continuity mistake: When the Protagonist and Kat are speaking shortly before the journey to Stalsk-12, in the shot where Kat leans in to kiss him on the cheek, the oxygen mask that the Protagonist is shown wearing is positioned hanging directly in front of his mouth. The shot cuts to focus on Kat, but when it cuts back to the Protagonist, the oxygen mask is suddenly hanging in front of his left cheek. (01:55:34)
Continuity mistake: When the Protagonist approaches Priya after inverting back in Oslo, right as he says hello to her, on Priya's left, a woman and man can be seen. The woman is wearing an orange cardigan, blue jeans and a handbag over her arm. The man next to her is holding a plastic water bottle. The camera then cuts to an angle in front of the Protagonist and Priya, where the man and woman are suddenly further behind them. (01:46:43)
Continuity mistake: On the shipping container, Neil injects Kat with some medicine in a syringe. Whilst Neil says "The faster you sleep, the more you heal", he is shown with his left hand holding Kat's arm and has his fingers positioned under her arm. It then cuts to a closer shot of Kat, where Neil's left hand is now positioned on top of her arm. (01:37:58)
Continuity mistake: Whilst Wheeler is explaining the rules of inversion to the Protagonist shortly before he goes outside, as she is saying "Gravity will feel normal but appear reversed for the world around you", she is shown holding a small tank of oxygen in her left hand and begins attaching it to a tube shown in her right hand. The camera then changes angles and the oxygen tank is now in her right hand and the tube is suddenly attached to the tank. (01:30:02)
Suggested correction: People doing procedures change gloves all the time. There is nothing suspicious about using 2 pairs of gloves in 3 minutes.
He was already done with the procedure when he removed the first pair of gloves. He was never shown putting on the second pair.
It's the same scene replayed, a true editing error.
But this scenes are within about 15 seconds of time - so there is no time to put on another pair.