Other mistake: While Iago talks to the Oracle, when he flies towards her, he's seen not flapping his wings; he's just floating.
Other mistake: In the dispatcher's room set the "computers" used are actually old microfiche film viewing screens. The actors pretend to be reading incoming police calls off the screens when they are actually looking at old film files.
Other mistake: During the "Hellfire" sequence, when Frollo is singing "God have mercy on her, God have mercy on me...", his shadow against the wall behind him rises as he backs up closer to the wall. However, when he turns around to press against the wall, his shadow ends up far above his body when it should have become level with his body by that point - like the very next close-up shot of Frollo shows, which is itself a continuity error.