Floating Zone Dog.
If you keep watch the video, you will see the very brief moment where Zone Dog briefly moves down to the ground and move up on the train.
Sometimes you “cheat” the game. Like when mind control works 100% of the time instead of 50%. Or when you mind control a guy and then Lux mind controls him back, and he stays stuck as an enemy the rest of the battle with the bad guys attacking him.
Just bugs, man. Reporting them is great, though.