After the three kids side-swipe the Sherrif's car their car is missing the right side mirror and then, as they drive away, the mirror is clearly seen in place only to disappear in the next shot.
The car that got side swiped had a different license plate when it got hit (A47P9H) than it did when it pulled into the Sheriff's office (L14F3V).
(at around 1h 13 mins) At the end of Cooper's paraphrase of the opening of the seven seals, he throws his arms above his head. He then slowly lowers them- twice. First in an over-the-shoulder shot of actor John Goodman, and again in the next shot, a frontal shot of the good preacher.
The boys are served Miller Lite beer, in green bottles with white labels. The label color is correct, but Miller Lite bottles are brown, not green.