Visible crew/equipment: In the scene where the indian guy is remarkably "flying" the toy plane by using his mind and interesting hand movements, when it shows a close up of the floating plane, you can see the string to which it is attached.
Audio problem: In the scene where Miss Hannigan, Rooster and Lilly are singing the song "Easy Street" Rooster encourages his sister by saying "Hit it, Sis." But he actually says "Hit it Carol." The "Sis" is an overdub. This may not be a subtitled line but is clearly spoken.