Originally Posted by Tinabedina

what about the most obvious canon mistake- the writers/director STILL have Harry doing underage magic: at the beginning of the movie his is performing "lumos," and THEN, harry even tells his relatives that he's going to get in trouble for underage magic after he blew up Marge, despite the fact he wasn't concerned about it when he was performing it before. Ugh! That's what pisses me off most about the movies!