Other mistake: In the ending cutscene of Chamber of Secrets, in the background you can see that all of the students are stiffly sitting there with blank faces, and one of them is shaking his head nonstop. In all the other Great Hall cutscenes, each student is moving on their own. The possible issue here is that the animators accidentally submitted an early animation stage.
Bug: After about 10 minutes of gameplay, if you leave an area of the school and try to head to another, the screen will go black and the loading screen which shows a bubbling cauldron will appear. Unfortunately, the loading screen will not vanish but will remain. The only way to progress further if this bug occurs, is to reset the game console that this game is experiencing the glitch.