Continuity mistake: At the beginning of the movie, the hunter is looking for his dog. The rifle on his shoulder keeps changing position, being upside down or not - which is easy to spot because of the big scope. (00:01:30)
Continuity mistake: The sun angle changes several times during the chase sequence when the dragon is on the flatbed truck.
Continuity mistake: When Kadgar is telling Lothar about the great gate and that the Guardian burned his research, both of them go to pick up a chest, which they were doing anyway, but instead the scene switches to them both sitting down to talk, and the chest has gone. (00:52:00)
Continuity mistake: In front of the station, the con man bargains with the taxi driver the fare; during the scene, the same black man with a floral shirt passes at least 3 times. (00:01:30)
Continuity mistake: When Lucius reports to Pilate after descending the staircase, the shots change, showing the staircase behind Lucius, columns (and no staircase), then back to the staircase again.
Continuity mistake: When Batman and Batgirl are about to have sex on the roof, Batman lets his left hand slip down from her back to her butt. In the next shot, it's on her back again.
Continuity mistake: During the flashback, where Sienna plays a search game with Zobrist in his office, her knitted coat is off her shoulders, on her shoulders, and off again. (01:20:00)
Continuity mistake: As Madea passes by to go up the stairs, Joe's hands are both on his cane. A second later, his left hand is off it.