Revealing mistake: When the Wolf King is arriving through the elevator, there's a shot from a distance featuring Jodie Foster that wheels a chair in. You can see in it that the elevator arrow display is not moving; nobody is using them. (00:50:35)
Revealing mistake: Gone past Waikiki who tells him he knows about the cop, Everest wheels her to the secret door. Batista to open it touches the leftmost corner of the slat. In previous close-ups, the button was at much greater distance from the wall, surely not just an inch. He's pushing no button, just pretends to. (00:56:30)
Other mistake: In the close-up of the gun freshly printed, there's a bunch of molten plastic by the gun cylinder and the grip. Waikiki retrieves it right away, bare handed, and the bed is completely clean too. (01:03:25)
Plot hole: Waikiki is not supposed to know who 'Niagara' is and most importantly, he is supposed to think that the Wolfking and his men are there for him and Honolulu. Yet the moment the Nurse mentions that Nice is "with Niagara", his reaction is as if he always knew the Wolf King is a patient. (01:10:00)
Continuity mistake: Nice's hands invert position (left up, right up) when she is hugging/supporting Waikiki after he jammed the printer. A moment later she supports him with her left hand on his bicep, but it is gone in the reverse shot. (01:12:25)
Continuity mistake: When Bautista confronts the thugs still to the other side of the gate saying "Visiting hours are NEVER!", Crosby is holding two consecutive horizontal bars in one shot, two with one bar apart in the next. (01:15:30)
Continuity mistake: Nice draws a line in the asphalt of the secret passage (cool idea, although there's no way that the bad guys can actually see that especially at a distance!). In the first overhead shot, there's a gap in the line. When the line is shown again next with the first baddie croaking before it, the line has already changed. (01:15:45)
Factual error: Sherman prints a gun through the hospital's 3D printer. We see the gun, the cylinder, and 6 bullets. But if bullets are printed too, they still would need to contain the gunpowder, and the 3D printer construct shown there looks made out of a single kind of material, plain looking, surely not the product of a wonder machine that'd be able to recreate the complex chemistry required to make working bullets it was not even designed to do - in fact they look like suppositories, with no division at all between primer, casing, etc.
