While Diana is tied and gagged to the chair the gag in her mouth appears to be tied tightly one moment and then loosely tied the next. Then it goes back to being tight again then later loose. This pattern happens several times.
When Henry enters the shed where Diana is tied up facing a bomb, the timer is down to 56 seconds. It takes him more than a minute to find Diana and after wasting more time trying to untie her legs when he finally spots the bomb, the timer is still only at 50 seconds.
Bobbie pulls some folders out from under her arm, then in the next shot pulls them out again.
The televised invasion attack upon the two police cars and farmer's truck clearly shows the Pennsylvania keystone decal on the police car doors with "State Police" written on them. Later when the army general inspects the destruction after the battle, he laments over the loss of the "sheriff's" officers.
When Harold escapes by jumping through the warehouse window, it shatters but there is glass remaining in the lower left of the frame, as well as glass shards on the ledge. When the space creatures begin climbing through the window, all of the glass and shards are gone.
When Wonder Woman drives up to the town square where the TV reporter is broadcasting from his remote truck, the side of the truck reads "Pittsburg." However, the correct spelling of the the Pennsylvania city has an "h" at the end, "Pittsburgh."
The Army jeep driven by Col Elliot (Tim O'Connor) has "For Optical Use Only" stenciled on the sides instead of "For Official Use Only".