Continuity mistake: In "The Unsinkable Mr. French" (season 5), the amount of whipped cream on Mr. French's jacket increases as he's getting up from the couch. (00:23:00)
Other mistake: Season 5 sees the family celebrating and reminiscing when the children came to live with Uncle Bill. Buffy and Jody were 6 when they came to live with Uncle Bill. This would make the twins now 11. In a later season 5 episode, Jody is trying to get a female classmate to like him in order to secure a stamp he wants for his collection, the Spanish triangle. His antics catch the concerned eye of his Uncle Bill who asks a few times during the episode, "is it normal for a 9 year old boy to be interested in girls?"
