Corrected entry: When the gangsters are trying to kill Jeff, Inspector Lee and the singer at Sydney's house, the main assassin is seemingly killed in a car crash. He reappears later in the film's finale.
Corrected entry: In the parking garage when the boss is leaning out of the car, Chow Yun Fat shoots at him. You can see his arm completely blowing off, but in the next scene the boss is standing outside the car with just a bullet wound in his arm.
Correction: Look again. That's not the bosses arm flying off, it's a trim piece that was attatched to the lower part of the car door.
Correction: Your own statement proves this is not an error or plot hole. "Seemingly" means it just seems like he was killed, when he wasn't.
Bishop73