Continuity mistake: When Dorian's boss shoots him in the stomach it switches from the boss to Dorian several times. Each time Dorian's buttons change colours from black buttons to white buttons to no buttons. (01:18:25)
Continuity mistake: When Tina goes to the jail and meet Stanley they almost kiss for the first time. She is wearing bright red lipstick. A few minutes later she is running down an alley outside of the prison from Dorian. She is wearing soft pink lipstick. (01:09:00)
Continuity mistake: While in Mrs. Peenmans' hall, just before she shoots him, his hands switch places on the mallet. In the first shot, his left hand is on the bottom, right hand is on the top. In the other two shots, it is vice-versa. (00:18:15)
Continuity mistake: When Stanley and Kalloway leave the police station, there are 2 men to the right shaking hands, then they walk off. The next shot is of Doyle saying "pig Latin", and the 2 men are doing exactly the same thing again. (01:15:50)
Continuity mistake: When The Mask escapes the club shootout, Dorian is left shooting at the air. He then gets tired and put his gun down. When the police arrive, he somehow has his gun raised again.
Continuity mistake: When Dr. Neuman is talking about the mask, he turns it sideways and taps it with his fingers. In the following shot the mask is lying face-up.
Chosen answer: Because they're lingering longer than he's comfortable with. He's not having second thoughts, he just wants to stop the timer temporarily until they're finally finished.
Phixius