Plot hole: When Ginger and Rocky escape from being made into a pie, it cuts to them back in the chicken coop. The movie is based on being unable to escape the coop, yet they can get back in no problem.
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Suggested correction: We see how Rocky got in the barn, and it's not far from their chicken coop. You really think they would escape without the others and think nothing of it? Also, as stated above, we don't see exactly HOW they got back, so how exactly is this a plot hole?
Plot hole: There's no visible evidence that Team Rocket has taken away Ash, Misty, and Brock's Poké Balls when the gang was in the cage, so why don't the Trainers call out their Pokémon (Brock's Onix would've helped out very much) and escape the cage?