Continuity mistake: In the opening scene Chow Yun Fat shoots a man wearing a yellow jacket and green shirt - the shot goes through the lapel of the jacket and there is a splash of blood. A few frames later, as the man is falling out of shot, his jacket opens to reveal his shirt is unmarked. (00:02:20)
Continuity mistake: When John is with Meg, sorting out the details of his new passport, 2 goons come to get them. The movements of the goons in the regular shots doesn't match what John and Meg see on the closed circuit TV. The CCTV shows the man on the left getting ready to shoot the door, the next shot (non-CCTV) shows the man on the right shooting the door. (00:22:10)
Continuity mistake: The man in the darker jacket shoots the monitor of Meg's computer - the rear corner is destroyed. When John shoots the man in the light jacket the monitor is visible in the background and the far wall is visible through the hole showing that the monitor has been utterly destroyed. About 40 seconds later, the monitor is briefly shown undamaged. In subsequent shots the damage at the rear of the monitor is present but the screen is intact. (00:23:03)
Continuity mistake: After being handcuffed and hit, Meg's lipstick is smeared across her face. When she is shown next, after the scene in the carwash, the smears are gone. (00:39:15)
Continuity mistake: When John and Meg are trying to escape the carwash in the car, in some shots the back window of the car is totally missing and in others there is a large section of shattered glass still there. (00:41:24)
Continuity mistake: When Meg is altering the passport, we get to see the photos taken in the photobooth in the arcade. The booth took 4 pictures of John in slightly different positions (e.g. in the 4th photo (not the last flash which signifies a flashback) his head is turned quite a way to the left); but the 4 photos are identical. Also John's hair in the photos is different than when he was in the arcade. (00:55:57)
