Continuity mistake: When Mr. Wonka is first walking toward the crowd, his walk is much longer than the actual path. Watch the shadows change on the overhead shots as the day of filming went by.
Continuity mistake: When Tevye goes into town before the Sabbath to make his deliveries, a bunch of men and women run up to him complaining about how late he is. Yet as soon as he starts filling the orders and talking there are only men around him. Where did the women go?
Continuity mistake: Polly Browne is in her dressing room with a picture of Tony Brockhurst on her mirror. She starts to sing and picks the picture off the mirror. As we see a close-up in her hands it is a totally different picture of Tony. As she puts it back, the photo has reverted back to the original.
Continuity mistake: One of Mr. Browne's apples falls on the gravy when he is juggling, splashing his face and shirt. Later his shirt is spotless.