Continuity mistake: Bruce puts the cooking pot to the right of the red pan. A shot later, they have swapped sides.
Continuity mistake: When Barry arrives at work and talks to his boss, the furniture and people around change all the time. Sometimes there's a white column on the left; others, there's a shelf next to it; yet others it vanishes and there's a box and a coat rack. Also, the guy on the right is sitting closer or further away randomly, despite the angle on Barry and his boss being always the same.
Continuity mistake: Right after Wonder Woman takes off, the people on the bridge vanish.
Continuity mistake: When Wonder Woman saves Batman and the other guy, there are skid marks on the right side of the road. When she takes off, they disappear.
Revealing mistake: When the Batcycle slams against the taupe BMW blocking the road, there is no driver inside, to allow for a safe stunt.
Revealing mistake: During the chase in Gotham, the armoured truck crashes against a jeep. The driver remains stiff as a board, unaffected by the violent impact or any laws of physics, revealing it's a dummy (or a CGI asset).
Continuity mistake: The taupe BMW is about to crash against a red car, but a shot later it's changed to a black/dark blue car. (00:04:43)
Audio problem: Outside the court, Iris replies: "Yes, a date Barry", but the word "Barry" is spoken from a side angle and her jaw is not moving.
Continuity mistake: Outside the court, Iris tells Barry he should ask her out for dinner, while her scarf flutters and covers her coat's left lapel. A shot later from a different angle, her scarf lies neatly on her blouse, under the lapel. (02:12:13)
Continuity mistake: When Barry meets his mother at the supermarket, he wipes the tears off his right eye. Shot changes and he's wiping his left eye.
Continuity mistake: When the truck filled with drums overturns, a drum bounces out on the road. Shot changes and the drum is gone, only to fall again a second later.
Continuity mistake: After old Barry has failed trying to go through the wall, young Barry is lying on the floor trying to stand up. His position keeps changing in every shot from frame to frame: sometimes he leans on his left side, then suddenly on the right, and sometimes he leans on his back. (00:45:12)
Continuity mistake: When Old Barry tries to cross the wall with Young and fails, the way the fallen coat folds on the floor changes between shots.
Continuity mistake: Old Barry is holding Young, about to try and cross a wall, with Young's arm lowered and holding his coat. A shot later, Young's arm and coat are raised. (00:44:48)
Continuity mistake: When the Barrys try to flee the lab, Old Barry holds Young's shirt at chest level with his left hand. A shot later, his hand is lowered.
Continuity mistake: When Old Barry collapses in the lab, a yellow bottle lies 20 cm away from him. A shot later it's right next to him.
Continuity mistake: When the Barrys are at the lab, the headphones are either resting on the table or on top of the coat. This swaps back and forth.
Deliberate mistake: When Flash is at the coffee store, the pavement is dry. When he exits the place dressed as The Flash, it's wet for cinematic purposes, but a mistake nonetheless.
Continuity mistake: While Gary wakes up, the stuff on the table changes positions or disappears between shots.
