Continuity mistake: In the scene where Jet Li grabs the steering wheel of Bob Hoskin's SUV and they crash and flip over, the side view mirror on the right side breaks off and reappears several times during the crash. Also, when the SUV flips over, one can see a large flat panel on the underside of the car that disappears once the car has come to a complete stop.
Deliberate mistake: This was probably done intentionally to make them more visible, but the bullet holes left in the stairwell wall by Bart's handgun while he is chasing Danny during the movie's climax look to be about the size of golf balls. Typical handgun calibers aside, just looking at the size of the clip he's loading into the gun and seeing how many rounds it holds, those rounds would have to be much smaller than the holes the bullets made.
Continuity mistake: In the scene where Danny and his uncle is riding down the road in a car, you see a Mack truck hit them. As the car is being pushed along, notice that the hood of the car is sticking straight up in the air and almost ready to fall off. After the truck stops pushing the car, you see some men drive up, get out of their car with machine guns and start to shoot at the damaged car. During the shooting take note of the condition of the hood - the damage is completely different from what you saw earlier. (00:26:40)RLN
Continuity mistake: As Danny is reading his ABC book at the start of the movie, blood drips from his head. We then see him picking up something from the bed. As the camera changes back to the view of his face, we see that the blood smear has changed. The blood that was on his eyelid has now disappeared.Scrappy
Continuity mistake: During the antique warehouse scene, Jet Li misses his cue to come defend Bob Hoskins; as a result, Hoskins takes a beating and is bleeding profusely from the bridge of his nose to his cheeks, on both sides. This scene transitions to Hoskins' headquarters, where Hoskins is now chewing out Jet Li, telling him how useless he is. In the close-up profile shot, Hoskins now has no blood whatsoever on the right side of his nose or face. The camera cuts as Hoskins walks to his desk and turns, and now blood is again splattered across both sides of his nose and face.Charles Austin Miller
Revealing mistake: During the fight in the apartment, the girl in the shower is wearing a black thong. (01:44:00)