Continuity mistake: During the fight on the roof at the end of the movie, at one point, Jackie is standing on the edge of the roof, and the camera is above him. There is a view of a car park at ground level, with cars in it. There is then a brief cut away, and, in the next shot, the car park is empty.
Continuity mistake: When Jackie infiltrates the building in Rotterdam, he changes from his street clothes to that of a coffee server. Later, when he is about to get into a fight on the rooftop, he is wearing his street clothes again. He didn't have enough time to change as he was being chased.