Once again, we continue our streak of ruining everyone's movie experience by nitpicking the littlest of mistakes in the Harry Potter series.
After the scene with the Boggart, Harry asks Lupin why the professor didn't give him a chance with the mystical shapeshifting creature.
Lupin replies because he was afraid the thing would turn into you know who.
As in, you know, Voldemort.
Well, here's the issue Lupin old boy: the Boggart had already turned into a dementor before you could jump in front of Harry.
So you already knew it wasn't going to be Voldemort.
In the moments after Malfoy is mauled by Buckbeak, Hermione goes up to Hagrid to tell him to take Malfoy to Madam Pomfrey.
During this time, her Time-Turner is totally visible, even though it's supposed to be hidden.
When the rock breaks the urn the first time, we see that it's broken into three pieces.
However, the second time (when Hermione does it herself) it's several large pieces.
Alright, so we know that at one point and time, Harry sees the name "Peter Pettigrew" on the map.
We know that he also at one point notices it next to "Ronald Weasley".
How come this never came up before?
How come George and Fred Weasley were never confused as to why their brother was sleeping with someone named "Peter Pettigrew"? Did they just not want to embarrass him?
As you can see, Harry's tie is completely backward in this shot, with the thin part being longer than the thick part.
This could be forgiven if it wasn't for the fact that in the next shot it's perfectly fine.
See those skulls on the shelf?
In the subsequent shots, they're either moved or not there at all. I feel like a lot of this can be attributed to magic or just bad continuity.
At the moment where Harry knocks Snape unconscious after using Expelliarmus on him, the professor flies back and breaks the bed.
When it cuts back to him, he's on the perfectly intact bed.
Throughout the whole movie, Hermione's hair length changes.
Sure, you could chalk this up to the fact that she might get haircuts... if it wasn't for the fact that it changes between adjacent shots.
As you can see here, Hermione puts her wand up to Malfoy's neck with her right hand.
However, when she punches him in the face, she uses her right hand... sans wand.
When the whole class is lining up to use the Ridikkulus charm against the Boggart, at first it's Ron, then Seamus, then Harry.
However, when it comes to Ron's turn, it's him then Parvati then Harry.
Poor Ron (or, sorry, Rupert Grint). It must've been hard growing up, going through puberty, and having that puberty broadcast to the entire world.
Anyways, the pimples on his face move around from shot to shot. This is probably because he kept getting new ones and getting rid of the old ones.
When the Knight Bus begins to come, Harry is leaning back on his arms, his sweatshirt draped over his shoulder. In the next shot, the sweater is on perfectly.
Magic sweater, perhaps?