Flower Power - S3-E6
Audio problem: Towards the end of the episode, when Ash and his friends are cheering for Bailey, Misty's mouth moves, but no sound can be heard. (00:20:13)
Kirinriki! The Village of Esper Pokémon! - S3-E40
Audio problem: When Girafarig speaks, after Cherry tells Ash to relax, its voice plays before its mouth moves. (00:03:21)
Whose Is the Waninoko!? Satoshi vs Kasumi! - S3-E35
Audio problem: When Pikachu says, "Pika?" as he is surprised about Ash's win in his match with Chikorita and Staryu, his mouth does not pronounce the "P" in "Pika." (00:13:17)
Answer: There are a lot of fan theories around this, but the most common theme is that Pikachu had another trainer before Prof. Oak, who gave him to Ash. Pikachu didn't appreciate being handed over.
Ssiscool ★