The King of the Copycats: Part 1 - S1-E18
Continuity mistake: When Jaden, Bastion and Chumley regroup after searching for the card thief, in the wide shot, Bastion is standing 45° perpendicular to Jaden. In the next shot, Bastion is suddenly 90° perpendicular to Jaden. (00:09:20)
The King of the Copycats: Part 1 - S1-E18
Continuity mistake: After Dimitri has beaten Syrus with Yugi's deck, there is a shot where he says "It's good to be the King of Games", he has his right hand scrunched into a fist. When the shot cuts, his right hand is suddenly free and not making a fist. (00:09:33)