Other mistake: During the lightspeed skipping sequence, there is a scene where two Millennium Falcons appear on screen.
Suggested correction: These are mirror spires, a reflective surface. It's not a mistake.
It was confirmed to be a mistake in rendering. The "mirror spires" was made up to try and excuse the error.
No, the director actually said that this was a planet that shows reflections. Because you can see the towers reflected.
Continuity mistake: When Alita is playing the street version of motor ball she knocks over Tanji. In the next shot Tanji is following her in the pack as she scores, then the shot switches back to him on the ground.
Continuity mistake: Vers KOs the Skrull she does the warcry thing at, and then another one on the corridor steps. She is then seen fighting from the perspective of the corridor to her right, but there are no Skrulls in sight against that door, while at least one was already lying down there. There are two when the camera gets back closer, and when she neutralizes the last one who bounces onto his own stun mace, there are again two, and she somehow got between the last one and the others. (00:20:30)
Revealing mistake: In Guatemala, when Arnie shoots John, in the shots from behind Arnie's body double is noticeable.
Continuity mistake: At the start of the film, Eggman is chasing Sonic through the streets and there is a shot of the city skyline down a street behind Sonic as he makes a turn. The camera then cuts to inside Eggman's ship to a close up him with the city skyline still behind him, only now it's different buildings behind Eggman. (00:01:00)
Continuity mistake: When Billy finally finds his mom and talks to her in front of her apartment, the door behind her changes from (almost) fully closed to much more open, to an intermediate state, and fully closed again at the end. (01:25:30 - 01:28:00)
Continuity mistake: When agent H is being chased by the MIB agents through the market streets of Marrakesh, he runs past the same extra twice in two separate streets: a young guy with a goatee, wearing a brown robe with red collar and a backpack. (01:02:00)
Continuity mistake: En route from the front door of Wayne's mansion to the table in the Batcave, the pile of pizza boxes in Alfred and then in Mike's hands continues to change in size and number: at first the pizza girl delivers 11 boxes, Mike slams on the table just 8, but he brought down the stairs twice that amount (without counting through freeze-frame the precise numbers, it's simply obvious at first glance that the pile is bigger in some shots and the pizzas themselves are pictured of inconsistent size).
Continuity mistake: In the movie ending, the three main characters (and two main actors) are walking off together following Will Smith Sr. That 'knows a place' to eat. Notice on the left part of the frame, along the path they are traveling, a couple of students; he has a beige jacket, yellow-ish sneakers and jeans, she has a blue jacket, and they are talking with another girl with a lighter blue jacket. In the next shot Danny asks him "So you settled down on major yet?" and the two aforementioned students are behind them, standing at the beginning of the walkway. (01:45:35)
Continuity mistake: In the Hulk scene at the diner, once Scott takes the picture of the kids, in the frontal shots he is holding the phone with his right hand and hands it to them, while the reverse shots don't match - egregiously noticeable when he says "I don't want a picture with them" waving an empty right hand. (00:38:05)
Continuity mistake: Alfred interrupts Bruce's chat with Selina at the party with the news that Bane has abducted a child. He says "Ringing your phone now" by pressing a button on a keypad that was not there in the overhead shot. (00:04:20)