The listed goof is not a goof (probable spoiler)

It says that the stock person tskes away the yogurt from Leelee, and then suddenly the yogurt reappears in her hand. In actuality, there is plenty of time for the stock person to give her back the yogurt, although the camera does not show it. And from what is said, it is obvious that he changed his mind about taking it and telling on her for shoplifting, so gave it back to her and walked away before she had a chance to accuse him of stealing the walkman.