When Catherine is let out of the car at the wedding hit, there is some kind of large farm equipment on the road in the distance. The car starts to drive away, the shot cuts to her face, then back to the car leaving. Despite the fact that the car has only traveled a few feet, the combine in the distance has disappeared.
When Catherine is learning German, the teacher never corrects but instead commends her despite the fact that she repeatedly uses incorrect words or pronounces the words completely wrong.