Revealing mistake: As Ash, Misty, and Tracey are making their way through the crowd, Tracey clips through one of the people in it. (00:05:33)
Revealing mistake: When Ash's friends run over to him, as he dives into the pool, Pikachu can be running in midair. (00:14:27)
Revealing mistake: When Ash tells Lapras to go back to the ocean, his left arm is transparent. (00:14:18)
Revealing mistake: The pedal James presses when he slows down the lorry is the same one he used when speeding it up. This is due to the shot of him slowing the lorry down being a recycled shot of him speeding it up. (00:18:35)
The Mandarin Island Miss-match - S2-E18
Revealing mistake: When Prima walks over to Ash and his friends, she is briefly layered between the table and Tracey. (00:03:06)
Answer: Yes it ran away because Layla hurt its feelings.