The gangsters, who are trying to enter the room where The Three Stooges are hiding, clearly push the door open a couple of times. However, on the Stooges' side, the door does not open at all.
When the stooges huddle, Moe is standing in the wide shot, on his knees in the close-up cut, and standing again in the next cut.
When Moe is in front of the college publicity department, the shadow of the actor that Moe will try to get a dime from is seen at the right of the screen while the actor is waiting for his cue to enter the scene.
When the woman's hat is supposedly blown off by the wind, it is obvious that she pushed it off. It is then pulled by wire under a car so that the Stooges can push the car out of the way to recover the hat.
A street cleaning truck passes the Stooges, drenching them, the sidewalk and the wall. The woman whose hat they saved is off-camera, but in the path of the street cleaner, yet she, the sidewalk and wall are dry.
Near the beginning, when we first see Moe Howard, he falls in next to a passing pedestrian to ask for "a dime for a hamburger". The shadow of the boom mic following them can be seen on the sidewalk.