Other mistake: In the scene of the fire at Thornfield (when Jane saves Rochester), the fire is burning unbelievably slow. In the time it takes Jane to wake Rochester, and Rochester to stop the fire, the whole room especially the bed should've been engulfed by fire. It would also be impossible for Rochester to pull the curtains from the bed and put the fire out the way he did.
Audio problem: In the fire scene, Rochester is barefoot when he puts out the fire, stops to put on his pants, but you can hear that he is wearing shoes when he walks away. (00:49:00)