Continuity mistake: After knocking Ganondorf down the horse in the final battle in Hyrule Castle, his sword is still in his hand. However, when he talks to Link immediately afterwards, it's suddenly in the sheath and he pulls it out.
Bug: If you save while in the cannon room and load the game again, you will be unable to progress any further. The reason for this is that you cannot warp out or leave the room because it says Shad is still in the room with you. But he is not actually there, so it is impossible to ask him to leave, leaving you stuck in the room.
More trivia for The Legend of Zelda: Twilight Princess