After Elfo loses his right shoe to the squirrel in the forest (and before he falls down the hill), he is standing with one shoe on while talking to the mermaid. When the perspective changes to be behind Elfo, his shoe suddenly reappears on his right foot, only to disappear again.
When Bean is slurping soup with the Nuns, the bowl colors in front of the nuns change.
When Bunty has a baby, it is born with a belly button but no umbilical cord attached.