Continuity mistake: Cathy and Heathcliff run away from two dogs as they spy on the party and Heathcliff helps her up the wall. In the next shot he is already on the wall and jumps down.
Continuity mistake: When she enters the room and then turns around, Cathy's muff disappears between angles.
Continuity mistake: As Cathy dies in Heathcliff's arms while they look out from the window at the moor, her arms go from around his neck, to going limp, to one arm around his neck, to both finally going limp. (01:40:00)