Continuity mistake: When the kid says "Do you wanna go out sometime?" to Lunch Lady Velma, a girl with brown hair, nerdy glasses and a shirt with rainbow stripes walks by behind him. A couple of shots later, there she is again, walking along the same path again. (00:39:40)
Other mistake: Daphne and Velma chase Griffin when they are on their lunch break, but when he enters the locker the clock shows 20 to 9. (00:43:50)
Continuity mistake: When the girls melt the locker for the second time, the circuit is undoubtedly positioned under the lock, but as the principal walks behind them saying "What!", you can see it poke from the side of the open door. (00:44:00)
Other mistake: From her position, looking down on Daphne and Velma, Principal Piper couldn't have spotted spot right away the fact that they are missing the badge. (00:44:25)
Continuity mistake: In the school hall, Daphne and Velma find Griffin zombiefied. In the shots with the widest camera angle (same as when the two buddies to discount Draco Malfoy arrive playing ball) Velma is wearing her cloud badge on her chest, above the overalls. It's on the overalls in the rest of the scene. (00:45:30)
Other mistake: Velma has to climb to the top of the Bloom Bracket. When the chart is shown before the montage, a girl called "Kristina Davies" (blonde with short hair) is in second place behind Mikayla Martin. Once the bracket is shown after the glue prank during track and field, Velma is climbing above a Kristina Davies who is in 148th position, and has the profile photo of a dark haired girl with long curly hair. When she climbs above number 88, the same name is at the top of the screen. How many Kristina Davies could there be in that school? (00:48:05 - 00:48:45)
Continuity mistake: When Velma slams the big pile of work on the chemistry teacher's desk, the paper on top of it is a couple inches off the side closest to the professor, but it's perfectly aligned with that side after the cut. (00:48:15)
Continuity mistake: Sabotaging "Violet Johnson", Velma and Daphne are peeking from the door of the lab; the reverse shots with the hand in foreground don't match the rest - the hand looks to be operating the equipment but it is not when the table with the teacher is shown. (00:48:50)
Continuity mistake: Velma gets in the back of Mikayla's art installation looking for the power cables, and Daphne follows at distance. In the close-up, the shadow on the back of the projection screen is closer to the edge than in the preceding aerial angle. (00:49:40)
Other mistake: Daphne and Velma ruin Mikayla's exhibition that is set to begin at 4 PM, so they must be in the corridors way before that time (when they poke out of the locker secret door from the inside, the hallway clock does in fact point 5 minutes to 4). They get then chased by the ghost and find the secret lab. When they come out of it to prepare for their Bloom mission, they pass in front of the principal's hall as one of their first actions, and it's a quarter past 7 (or 6). There's really no way they spent over two or three hours doing all that - not to mention that during the call with the mom she says she was tired and wants to finish the work tonight, which is something certainly possible to say mid-afternoon but more likely at an hour when it is dark outside like the one shown in the film finale, and Velma picks up the a drone that is snoring in a rather dark room, making even more obvious how the time seem to have gone by in a blink. (00:51:35 - 00:58:17)
Continuity mistake: Once Mikayla is getting 'eaten' by the tube, Daphne holds Velma's arm clinging to her sleeve; at the cut, her hand is relaxed instead. (00:53:25)
Continuity mistake: Velma is holding the scooter the 'ghost' was using; her hands are placed in different positions between shots. (00:55:30)
Continuity mistake: The time counter during the call to Daphne's mom from the secret school room jumps from 5 seconds to 13, 31 to 44, 57 and 1 minute and 18, with no possibilities for time to pass during each line/cut. (00:56:40)
Continuity mistake: As they get motivated to go look for the bad guy at the end, Velma tells Daphne "I am stronger than I ever thought I was", with the strap of her bag passing inside the collar, and not outside and by the top button like in the rest of the scene. (00:58:00)
Continuity mistake: Outside Bloom, Daphne says she can hear her dad "loud and clear." The zipper of her jacket in the next shot is closed more. (00:59:00)
Revealing mistake: As the girls handle the drone, and even more obviously when it drops on the security guard's head, it is clear by the way it bounce and clatters that it is almost weightless and certainly couldn't knock someone out cold. (00:59:50)
Continuity mistake: Daphne finds her mom sitting down and strapped to some device. She puts her bag down and reaches for the tubes, with both hands. Tobias tells her to stop and there's a cut to Velma and her, with Daphne using just one hand, the right. Next shot and she is still using both hands. (01:02:45)
Continuity mistake: In the first part of the denoument, with the two girls confronting Bloom, Velma says "Of course. Olivia was a musical prodigy." Her right hand is inside the backpack, which she is holding by the top using her left hand. Cut, and her right arm is across the bag. (01:03:40)
Plot hole: Bloom Innovative is depicted as an incredibly famous cutting-edge tech company with a massive social network presence. It is unforeseeable that its charismatic owner and public face would have been for years a hologram whose likeness is modeled after "the most famous male model in Japan" (let's forget the fact that it's pretty unlikely that'd be a white dude), not exactly a secluded country with no attention to media and tech. Later when they talk with the real villain, Velma in fact refers to him as "an obscure model", which would make much more sense plot-wise (but then Daphne couldn't have recognized him at first glance). (01:05:45)
Continuity mistake: In the ending, Griffin and the others are contemplating the main hall screen being unplugged and talk about life. Ryder tells him "You're number one in our book", with behind him a couple jocks walking down the hall with a football. The chat goes on and on, those two pass behind them few seconds later as they do their hand waving thingy, but are still approaching in the next shot. (01:09:20)
