Continuity mistake: When the bad guy brings the suitcase to the control room, the time on the timer behind him jumps forward and backwards between shots; no continuity. (00:05:30)
Revealing mistake: When Diana is supposed to cut the power cables to stop the timer, just before she cuts the cable, you can see that all the cables are already cut and have a large, obvious seam in each of them. Then, when her hand goes through them, they all cut right at the seams.
Deliberate mistake: When Wonder Woman is bouncing around in the padded room, there's one part where you can tell the stunt double is not Wonder Woman.
Continuity mistake: When Wonder Woman tries to escape from the building, she's in the room with the padded floor and walls. Her heels are missing from her Wonder Woman boots, but they were on when she was in the hallway.
Continuity mistake: Diana is initially seen wearing a dark brown short-sleeved dress, but when she picks up the coffee, the dress inexplicably appears grey.
Continuity mistake: When Diana spins around, the computers are on. When she transforms herself into Wonder Woman, they're off.
Revealing mistake: Wonder Woman is in a control room with walls and a hard floor, but when she starts jumping around to avoid the lethal red light, the walls and floor swap to wrinkled and bending inwards, revealing it's a room covered with safety mats.
Continuity mistake: Diana puts the seatbelt on the robot. A shot later, it's gone.
Continuity mistake: Before Wonder Woman jumps on the bad guy, he runs past a rectangular lid on the ground. When she catches him, he is metres behind, next to the rectangular lid again.
Answer: The transformation twirling was invented for the 1970s TV series only, to explain her quick change from Diana Prince to Wonder Woman. However, it would have been nice to do a little spin homage in the movie.