Continuity mistake: When Frank Bryce places the silver water kettle on the flame, the round ceramic lid rests on the counter, beside the small ceramic teapot. However, in the next shot, as Frank steps toward the sink, the ceramic lid is actually on the small teapot. (00:01:20)
Continuity mistake: After Frank places the kettle on the burner, when he steps in front of the sink in the wideshot, the window is behind the sink, in front of Frank. There are plants on the sill that reach the window handles. However, after Frank sees the mansion light and puts the teapot down, in the close-up of the window the center plant is gone and the left plant is different. (00:01:30)
Continuity mistake: When we first see Hermione, she puts the candle down on a chest of drawers or something similar. In the next shot it has moved to the edge of the chest of drawers. (00:03:45)
Continuity mistake: In the scene after the old caretaker is killed, Ron is seen sleeping on the bed and as Hermione is about to wake him up his arms change position. His right hand is first resting on the pillow, when it cuts it's under the pillow. (00:03:55)
Continuity mistake: At the Quidditch World Cup, when Cornelius Fudge welcomes everyone, the way he is holding the wand to his throat differs in the two shots facing him and the shot from behind. (00:09:10)
Continuity mistake: When Fred or George says "Sounds like the Irish has got their pride on", right before Arthur enter the tent, we see him swinging a pillow to his right ready to hit. When it cuts to Arthur entering, he has his pillow to his left. (00:09:50)
Continuity mistake: When Barty Crouch Sr accuses Harry, Ron and Hermione of casting the Dark Mark, the way he holds his wand changes depending on the angle. (00:12:20)
Continuity mistake: After Draco is changed back into a boy (from a ferret), Moody sticks his staff into the ground before he chases Draco around the tree. Initially his staff is leaning at a 45° angle, but when Draco comes around the tree and leaves the courtyard the staff is standing upright, at a 90° angle. (00:14:25)
Continuity mistake: On the Hogwarts Express, Harry's hair changes in level of scruffiness. In particular there is one bit that sticks out to the side on his left that keeps changing. (00:14:30)
Continuity mistake: On the Hogwarts Express, when Harry writes "Sirius Black" on the envelope it is written in thick black ink. However, in the next shot when the envelope is in Hedwig's beak, the name is written in thin ink, and the writing differs. (00:14:35)
Continuity mistake: When Dumbledore is about to introduce the other schools and Filch comes running through the great hall, he runs past Ron twice on his way up to the podium. The first time Ron is sitting up and his head turns as Filch runs past. As Filch continues to run, he passes Ron again, who this time has been lying his head on his arms on the table, and sits up as Filch runs past. The people near Ron also change and keep changing. (00:16:00)
Continuity mistake: In class, when Moody writes his name, unforgivable (curses), etc., on the chalkboard, the handwriting distinctly differs in the following shots. (00:22:30)
Continuity mistake: In class, when Moody shouts, "And hear across classrooms!" he throws the chalk at Seamus, and the way Seamus ducks over his desk noticeably differs between the two shots; he first leans down on his right arm, then on his left. (00:23:10)
Continuity mistake: The numbers on the blackboard in Moody's lesson keep changing. (00:24:00)
Continuity mistake: During the first part of the movie, Moody doesn't have a eyebrow over his Magic Eye, it is clear because you can see the stitch marks. Then when he is talking to Harry he has a bushy white eyebrow where there wasn't one before. (00:25:20)
Continuity mistake: The amount of eyebrow hair, just over Moody's magical eye, differs in various consecutive shots of him throughout the film. It goes from some hair being caught under the casing, to all of it being over the casing, and vice versa; such as when he begins to feel the effects of the Polyjuice Potion diminishing, and he looks in the cabinet. (It is Moody's eyebrow over the casing, not a piece of fabric.) (00:25:20)
Continuity mistake: When Cedric puts his name into the Goblet, you can see that his hair is wet on his fringe and stuck to his forehead in several clumps of hair. After he has stepped away from the Goblet, his hair has changed position. The clumps of hair are in different places and a gap has appeared. (00:28:00)
Continuity mistake: After Fred and George drink the aging potion, when the twins jump over Dumbledore's Age Line, in this overhead shot Hermione sits at the edge of the long bench, with the closed book and crossed legs. Yet, in the next shot, as Fred and George begin congratulating each other, Hermione sits a few feet away from the edge, still with the closed book and crossed legs. (This is before she moves her seat and opens her book.) (00:29:00)
Continuity mistake: The way Dumbledore catches Krum's name from the Goblet changes instantly. (00:30:45)
Continuity mistake: The size of the paper that has Harry's name on is considerably smaller when Dumbledore gives it to Harry. (00:32:20)
Answer: Voldemort's spell undid the Sacrificial Protection that Lily bestowed on Harry, but the Bond of Blood is a separate protection bestowed if the person sacrificing their lives is a relative. THAT spell is still renewed as long as Harry keeps returning to the Dursleys until age seventeen. Voldemort has removed one protection, but a second is still in place.
Captain Defenestrator