Continuity mistake: During the final battle scene, there are two shots showing a kicking horse lying on the ground, with one of Haroun al Rashid's soldiers (dead, most likely) pinning it down at its neck. In the first shot, one of Kamar's soldiers lies in front of its flailing hooves, but in the next shot, an al Rashid warrior drives a Kamar soldier backwards, tripping him across the lying horse - and the Kamar warrior from the first shot is gone. My guess is that the cuts were originally in reversed order but re-arranged for the scene.
Plot hole: When the acrobats free Haroun at the smithy, they lure his guards into the blacksmith's house singly or in pairs and knock them out. however, the sound of the blows and the rapid succession they are called for should have made the guards suspicious.