Audio problem: When Dorothy and the Scarecrow find the apple trees she says, "Oh, look, apples." The overdub is wrong, if you look closely at her mouth when she turns around toward the camera, she's actually not saying anything. (00:39:20)
Suggested correction: Her mouth does move, and she actually says, "Oh, apples! Oh, look!"
Audio problem: Inside the Emerald City Dorothy says "Can you even dye my eyes to match my gown?" Both the girl on the left and right reply but you only hear one voice speak. (01:01:35)
Suggested correction: Only the lady on the right replies.