It's All Greek to Scooby - S2-E13
Continuity mistake: When the gang gets to Santorini, the centaur shows up again and they take off to the right following the wall. Then the 'old maniac Moped guy' comes at them from the right going left. So they are going right, the Centaur is behind them to the left, and the Moped guy is to the right. So they go into a doorway between them. The Moped guy comes from the right and goes to follow, then suddenly the Centaur comes from the right also, when he was on the left. (00:16:40)