When Edit is imitating her psychology professor while talking to Abel, she holds a pen. Then she sets herself against the tree, and puts her hands behind her head, still holding the pen, but seconds later, the pen is gone without her having time to put it anywhere.
At the rave, the turntable is rotating in the wrong direction.
During the robot graveyard scene, in a shot showing a few rusty robotic statues and tombstones, one tombstone appears to be 'cut off' near the bottom of the shot and the background is visible through it. This is probably due to a misplaced background layer.