After dinner, Elmer walks into his darkened living room. When the view changes to being from inside the living room, all the lights are on. When Bugs knocks on the door, Elmer goes to answer it, without turning the lights off. When Bugs goes in, all the lights are now off, and Bugs turns them all on.
Elmer's tub in the bathroom changes: The two spigots change from being over the edge of the tub to being in the tub, and the soap dish appears and disappears.
After buying Bugs, as Elmer is walking home, he passes the same exact storefront and blurry sign 5 times.
When Elmer goes into his dark room the chair and the light switch is clearly seen inside the dark, there is also no shadow as well and when he switches off the light too after Bugs shouts at him too but when he goes fully into the dark before the fire works explode there is darkness covering the entire room meaning that viewers can no longer see the chair or the light switch and there is a shadow covering half the door.