The earphone that the old blind man has disappears from his hand when he falls into the boxes.
When Harold tries to sleep on the porch swing, the chain breaks. In one shot, before he rehangs the swing, the chain is visible and swing is level.
The shaving cream on Harold's face changes when he tries to use the can as a mirror.
During the "back porch" scene, Harold notices a pair of large bloomers come into view against the porch column. In the next shot, there is a distant view of the entire back of that same building. None of the laundry is visible and there was not sufficient time for the neighbor to remove it.
The way Harold lands after tripping on the skate changes.
When Bissonette is opening the can of tomatoes with an ax you can tell that the splash of tomato juice is coming off-screen and not from the can.
Jean Rouverol's name is misspelled as Jean Rouveral in the opening credits, but was correct in the end credits.
Bissonette packages the chewing gum for Mr. Muckle and takes him the package. However, the gum has fallen out and is left on the counter.