Continuity mistake: When Joe pushes Kid Blue into his silver bar vault, Kid Blue attempts to climb out, but Joe closes the door and Kid Blue traps his fingers in the door. His fingers are at first, all stretched out, but by the next shot, his fingers are suddenly closer together. (00:28:40)
Continuity mistake: When the waitress Beatrix is pouring coffee into Joe's mug at the diner, an angle from far away shows Beatrix's right arm with the kettle in her hand pouring the coffee into Joe's mug and her left arm is by her side. In the next shot, as she goes to leave, her left arm is now suddenly placed on Joe's shoulder. (00:02:50)
Continuity mistake: After Joe puts his gun in the basket at the start, he walks over to a slot to put the silver bars in. A CCTV camera is visible duct taped to the wall with a wire attached to the camera. The wire next to the camera goes on for a few inches before there is a bend in the wire going upwards. After Joe says "Two, Jedd" the shot cuts to a close-up of the CCTV camera, and the bit of wire before the bend is shorter than it was before. (00:03:15)
Continuity mistake: When Sara goes to shoot the rock salt at Joe, she cocks the gun and raises it to a 90 degree angle. In the next shot, as she fires, the gun is suddenly lowered slightly. (01:01:15)
Continuity mistake: When Joe is in the diner for the first time in the movie, he is sitting in the corner of the booth. As the waitress says "How's the French?", Joe is now suddenly sitting in the middle of the seat. Then when the shot cuts back to Joe, he is back to being in the corner. (00:02:45)
Visible crew/equipment: When Joe is driving in his car with his friends whilst on the drug, he ends up having to make a quick stop to prevent accidentally hitting a kid on the road. When he stops the car and just before the shot pans over to the kid, a stage light is visible reflected on the car. The only other lights in the area are two lights visible in the far background and there is no outdoor light that could have appeared to look like the light reflected on the car, except for the car's lights. However, the lights on the car are facing in front of the car, so the reflection was not that. (00:08:30)
Audio problem: When Joe and Old Joe are talking in the cafe, Old Joe asks Joe how is his French coming and Joe replies with "Good. You gonna tell me I ought to be learning Mandarin?" and Old Joe then says "I never regretted learning French." Old Joe's jaw is never shown moving along with the speech. (00:41:40)
Audio problem: When Joe is telling Old Joe that he'll never meet his wife in the future to prevent her death, a shot from behind Joe is shown, where he says "she'll be safe", but his jaw is never shown moving along with the line. (00:48:15)
Continuity mistake: When Abe raises his hammer to break Kid Blue's hand, Kid's hand is shown making a clenched fist. But when the hammer hits Kid, his hand is perfectly flat on the table. (00:54:35)
Other mistake: When Joe shoots the boy at the back of the house, he walks to the front at the same time a woman a few feet away walks toward him with a pram, and there are people in the background. There is no reaction from anyone to the obviously loud gun shot noise - his gun did not have a silencer on it.
Continuity mistake: When Joe exchanges the silver bars, his friend is shown entering in the background. The man places his hand in the right hand corner of the basket as he finishes placing the gun. A few seconds later, as Joe retracts his gun from the basket, the man's gun is now placed at the left hand corner. (00:03:25)
Suggested correction: You never actually see the second gun being placed into the basket on the wall so it's easy to surmise that the second one was placed to the left of the first.
Continuity mistake: In the "loop closing" montage, after Joe is shown at the cafe speaking in French to the waitress, he is shown looking at his stopwatch and the time reads 2:29. The following shot shows a tied up man appearing from the future on the white sheet. Joe then shoots the man, but it is noticeable that the angle of the gun and the position of the wound after he is hit do not match up. The gun itself is aimed at the man's head, possibly higher, but the wound itself is shown in his chest. (00:09:10)