Island of the Giant Pokemon - S1-E17
Other mistake: When Ash wakes up on the beach, part of the sides of the hat overlaps the front. (00:01:53)
Island of the Giant Pokemon - S1-E17
Other mistake: When Jessie says she cannot stand roller coasters, part of the background is coloured in like her hair. (00:17:26)
Island of the Giant Pokemon - S1-E17
Other mistake: When Ash and his friends are about to hit the Zapdos robot, its body is missing, and shortly after, Pikachu's cheek pouches disappear. (00:18:42)
Answer: Yes it ran away because Layla hurt its feelings.