Continuity mistake: When the two traitors ride away after seeing Hidetora at the top of the hill, Hidetora's left leg is exposed due to his kimono being blown by the wind. In the next shot of Hidetora, his left leg is suddenly covered. (01:41:15)
Revealing mistake: When the guard that wants to kill the fool is hit by an arrow, you can see the outline of a protection plate or something like that under his clothes.
Continuity mistake: When the wife of the new lord arrives at the castle and asks the guard why the other people don't bow in front of her, the guard runs to the other side of the road and speaks to those people. The shot later, he has disappeared.
