Other mistake: During the Cyborg Master's attack on the police station, the bald cop goes to get a gun out of the gun storage room - which is a regular closet. It's not even locked, he just walks straight in. No police station in the world would be that careless with their weapons.
Other mistake: All the boxes at the warehouse and cargo area are empty. Nobody has ever any problems lifting the boxes and tossing them around, or simply nudging them aside. Yet the boxes are sealed and neatly stacked outside in huge rows, waiting to be transported.
Other mistake: When the master cyborg enters the laboratory towards the end of the movie, he threatens a female scientist who can escape through the back door and hide in a small room under the ceiling. But the hole she supposedly came through is way too small for the woman to fit into.