Corrected entry: After Batman hits Joker with a net and pins him to the ground, he gets out of his jet and hops down. There is a chicken leg next to the jet from Joker's previous attack. But when Batman is getting back in while Superman and Robin are talking, the chicken leg has disappeared. (00:13:45)
Corrected entry: In the beginning of the film, Batman and Superman get in an elevator and turn to face the doors. Batman is on the right, and Superman on the left. When the doors close and they talk for a moment, they are still in this same position. But when the door opens again to let them out, suddenly they have switched. Superman on the right, and Batman now on the left. (00:03:20)
Corrected entry: The Deconstructor is supposed to rip apart any shiny black object. Joker first uses it on Batman's car when Batman is chasing Lex's truck. His car is ripped apart by the blast as it should be. But Batman is unharmed by the Deconstructor. But his is also shiny and black. Yet later it does start to work on him after Joker makes the people want to vote him president. (00:38:50 - 00:59:10)
Correction: Even though we are told the Deconstructor rips apart LEGO objects, we are never told if it could rip apart more than one LEGO object at the same time. The Deconstructor probably wouldn't have harmed Batman because it was already ripping apart the Batmobile. The reason for the Deconstructor ripping Batman later in the scene where the Joker makes Gotham vote for him is because there was only one thing there for the Deconstructor to rip apart. Batman, himself. It's most likely that the Deconstructor can only rip apart one LEGO object at a time, the first one it comes into contact with.
Correction: The shot isn't continuous in any way. By the time Superman comes, the police have already arrived, taken Joker, and left. Plenty of time to pick up objects that belonged to the Joker.
Bishop73