The Artful Codger has the large Contemplator statue in a magic cabinet. When he steps into the cabinet to make himself disappear, the statue is already gone.
When the adventurers visit the Artful Codger, he is sitting at his desk behind a stack of papers and pencils. But when he orders his butler to show them out, his body is now positioned in front of the papers and pencils (animation layer mistake).
When Rick is talking to Trix LeGrand on her stage, the letter R on his tunic is back to front.
When Rick says goodbye to Carol, the letter R on his tunic is back to front.