Continuity mistake: When Jackie jumps off his balcony the first morning, the Spanish grocer is ducking with his hands above his head, while in the close-up of Jackie landing he's using his hands to shield his veggies. (00:04:00)
Continuity mistake: When the limo pulls over to ask directions to the protagonists, Jackie has washed away the soap from one corner of the van, but when he turns around to talk to the bowler hat guy, the front of the van is back being all bubbly-soapy. (00:05:10)
Continuity mistake: Yuen Biao by mistake splashes the policeman with his bucket. Behind the officer, the van has very little soapy foam left over the store logo. But once the policeman smears his face with the greasy rag, the quantity of soap has increased, effectively blocking out of the writing. (00:06:12)
Continuity mistake: When David tosses the skateboard to Thomas so he can start taking orders and serving clients, Thomas backflips onto it. You can see behind him a veggie stand with 2 customers, that have completely disappeared in the shot when he lands on the skate. (00:13:15)
Revealing mistake: As the biker punks roam the streets disturbing shoppers and merchants and endangering people sitting quietly at the cafe tables, the majority of the extras are actually laughing and having a great time even when they are yelling and waving angry fists. (00:14:40)
Other mistake: Jackie and Yuen assault the first bikers very fast and suddenly: despite that and the presence of crazy bikers roaming the place, a huge crowd had already time to assemble in mere seconds making an orderly circle around them, no empty spots, to witness the fight and the breath-taking stunt filmed in the wide shot. (00:16:40)
Continuity mistake: Thomas comes back to the food truck after tripping. The biker gang leader kicks back the skateboard. You can see there's nothing on the counter in front of David, but when Thomas puts down the tray (should have been trays since he had 2), there's a coke paper cup instead. (00:16:44)
Continuity mistake: When the prostitute in the alley asks Gloria's daughter if she's new, she brings a cigarette to her mouth. In the shot that follows she is repeating the same gesture, starting with her lips curled in a smile. (00:26:10)
Continuity mistake: Towards the end of the scene at the restaurant with all the fat guys, Moby (Sammo Hung) drinks wine by the decanter, and spills some on his lapel. When he is shown at the counter making his exit, the jacket is all dry. (00:32:40)
Revealing mistake: When Moby and Sylvia have the car accident, extras passing by look into the camera a few times, and an elderly couple does not just that, but stops by Sammo Hung. They are not visible in the next shot (and they should be), but appear again later crossing the street on cue from another spot once Lola Forner has reversed the car. In the very last shot, another extra gets in frame for a moment, then has second thoughts (probably realised he missed his cue) and steps back out of frame for no reason. (00:42:40)
Continuity mistake: When the bad guy punches Lola Forner in the mouth, she falls over dropping her bag and box in front of her. On the floor, she does not move, and yet when the goons stand her up, her belongings are far back in the corridor. (00:43:40)
Plot hole: When Sylvia gets grabbed in her apartment by the bad guys, she's screaming from the get-go and they are standing in front of the door all the time. So Moby should have heard her as he approached the door to ring the doorbell, the door obviously lets sound pass pretty well since he hears her muffled whimpers a few seconds later even being at distance. Somehow, her making noise becomes an issue only once the doorbell has rung and was a non-factor before. (00:43:50)
Continuity mistake: When Sylvia kicks the keys under the door, the longer key points towards Moby as it slides, but towards the door in the reverse shot. (00:44:05)
Continuity mistake: When they back the van in to the taxis, the van's back fender gets pretty dented. In the next shot the fender is fine. (01:00:15)
Visible crew/equipment: During the car chase, when the taxi drives over the gas can and does the two wheel driving, you can see the ramp that flipped it up behind it. (01:01:25)
