Inferno, after being pulverized a couple of episodes earlier, is shown being heavily damaged when he reappears. After a couple of minutes, when the Predacons fly out of the Ark, he is clean again.
When we saw Inferno in a previous episode, he had been visibly blown to atoms by an Energon explosion. Yet in this episode, while he is heavily damaged, he is alive.
When Optimal Optimus transforms into a jet, the Spark of Optimus Prime is missing from his cockpit. It is there in all the other shots.
The Autobot logos on Optimus Prime's shoulders are missing minor details.