Audio problem: At the end of this episode, Aang tells Katara that forgiveness is the first step you need to begin healing. But if you watch closely, his mouth isn't moving at all when he says this.
The Tales of Ba Sing Se - S2-E15
Audio problem: After Toph deals with the bullies, she explains that she does not care what she looks like. The lip syncing is off. (00:04:09)
Audio problem: When the fire nation guard is hitting the alarm bell, the last hit before the next shot is not heard. (00:09:50)
Audio problem: At the start, when Zuko says, "I feel like a child," his mouth does not move. (00:01:05)
Audio problem: When Toph feels and hears the tank train coming for the first time, she says, "There's something coming toward us," as she runs out of her tent. She turns her head away from the camera after she says "There's," but for the time her mouth is visible, it is not moving as she is speaking. (00:03:11)
The Tales of Ba Sing Se - S2-E15
Audio problem: The Tale of Toph and Katara: Right after the scene of Toph and Katara at the Fancy Lady Day Spa, as Toph says, "Well, that wasn't so bad. I'm not... I actually feel girly," her lip movements are out of sync. (00:02:34)
Chosen answer: Toph had Katara use it to send a letter to her parents. It never returned.