The Ringer - S1-E1
Revealing mistake: When Link calls down to Zelda from the tower, you can see a fault in the drawing as Zelda moves. There is a low wall around her on the balcony, with flowers and vines on it. As she moves, you can see some of her dress pass right through the wall and vines towards the lower right. (00:01:50)
The Ringer - S1-E1
Revealing mistake: After Link grabs his sword and pillow from the air, he lands and turns to face two of the Moblins. When it shows them, the one standing up appears to have its feet stuck in the ground in an odd error in how it's drawn. (00:02:35)
Kiss 'N Tell - S1-E4
Revealing mistake: After hearing Spryte scream, Ganon teleports into the cave area and looks around. As he does, an odd animation glitch of a blue spot suddenly appears above his head just to the right for a few frames and then vanishes. It's almost the size of his head. (00:12:05)
The Ringer - S1-E1
Revealing mistake: Link looks down from his window and sees Zelda. Zelda then has a bird fly up and land on her hand. It cuts to a different angle before Link whistles at her and for a few frames before Zelda moves her hand, the bird is now not even on her hand, but apparently just hovering in the air beside it. (00:01:45)
Chosen answer: It'll be to ensure that they're always facing directly away from each other, 12 o'clock and 6 o'clock, meaning between the two of them they've pretty much got 360 degree coverage. Otherwise there's a chance they might end up at say 12 o'clock and 3 o'clock, leaving themselves exposed from another direction.
Jon Sandys ★