On Ice (1935)

Continuity mistake: When Minnie Mouse falls down on the pillow whilst attempting to skate, the pillow bursts and covers Mickey with feathers. When Mickey goes off skating you can see nothing surrounding the pillow, but when we return to Minnie later on, there are now a lot of feathers around it.

Continuity mistake: When Goofy is trying to get the fish out of the water with some tobacco and a pen-knife, you can see that the tobacco has nothing written on the side of it, but in the next shot a star and the word "tobacco" have appeared.

Continuity mistake: When Goofy is cutting up the tobacco, the position of the spittoon near the hole changes between shots.