The Water Flowers of Cerulean City - S1-E7
Continuity mistake: When Brock asks, "Shouldn't you head for Cerulean City Gym?" a street lamp goes from being present to being absent. (00:06:14)
Continuity mistake: When Officer Jenny is surprised when she notices Ash, her grip on the intercom changes between shots. (00:02:11)
Revealing mistake: When one of the staff of the Pokémon League goes over to type on the keyboard, she clips through a device in the process. (00:02:40)
Answer: Yes it ran away because Layla hurt its feelings.