I know there was the mistake during the sorting where the seating becomes messed up, but what other mistakes are in the movie?

According to Movie Mistakes, there are a ton of mistakes that were found in the first Harry Potter film. You can see the full list here.

Here are a few mistakes they found:

1. When the three children get past Fluffy because the harp is playing, as Fluffy wakes he dribbles on Ron's shoulder. However, when they fall down into the Devil's Snare, his shirt is completely dry.

2. In the flying class scene, Hermione's hair is crimped. Later, when you see the class looking at Neville after his fall, you see that her hair is straight. The very next shot she's in, her hair's crimped again.

3. When Harry receives his first letter in the mail, Dudley snatches it from him before he has a chance to open it. Then he gives it to his father (Uncle Vernon), and Uncle Vernon says "Who'd be writing to you?" If you watch Dudley carefully, you can see him mouth what Uncle Vernon is saying.