The curl of hair on Kala's head changes direction clockwise to anti-clockwise and back, sometimes within the same shot.
The large laser cannons Bebop and Rocksteady use disappear and reappear. They shoot at the turtles and Neutrinos when the appear at the fair ground, but the weapons disappear when they fall into the roller coaster only for them to use them again immediately after, but they disappeared again when they ran through the door of the collapsing building.
When the neutrinos warn the turtles about Shredder's new weapon, Raphael responds in Leonardo's voice.
When April picked up the neutrinos in her news van, Kala asked April who she is. The neutrinos had already met April in their first appearance in "Hot Rodding Teenagers From Dimension X" so they should know her.