When Teek and Noah are eating the bread at the table, they switch back and forth between Noah's face and Teek's, but if you look at the tray of bread you will notice, that there is bread when the camera is facing Noah, but no bread when it is facing Teek.
It is wrongly assumed the when Noah and Cindel arrive at the castle Noah dips his staff into the moat to show that it is made of some type of acid and the walking staff head is melted away. However, when they are running from the castle Noah's staff is once again complete and the head is perfectly in place.
Firstly its not his staff Noa shoves in the water it's a branch with leaves clearly visible on it, secondly it's not acid that melts it, there is a creature in the moat that attacks it. The same creature tries to get Wicket minutes later when he is dangling with his feet in the moat.