Other mistake: On the title screen, there are several mistakes. First, every splash screen has the stomping hammer facing backward. Second, while the obstacles and support change based on the country/region the level the player last selected is set in, the flooring and the background are always that of a USA level. In addition, after playing a Las Vegas or London level, the sides are that of a USA level as well.
Bug: London 2: Blimey!: When you reach the part with the rolling obstacles, sometimes, there is an animation error where the first one does not appear to be rolling; it slides horizontally across its path until it reaches the end of it.