Willy Wonka and the Chocolate Factory - Mystery Moving Shadow
Towards the beginning of the movie when Mr. Wonka is stepping out of the factory to greet the ticket winners, at the bend in the red carpet, there is a shadow from a neer-by building. Moments later as he walks, the shadow mysteriously moves over about 3 yards. It's not near the red carpet anymore.
Producer? Don't you mean the director? Besides, even if the director had caught it, there could have been all sorts of concerns about time and money to prevent him from fixing it.