After Bulkhead had torn out the insides of the Decepticon drone, and its body has collapsed, a tiny black piece of metal seems to protrude out of Bulkhead's lower right armor panel, then sinks back and appears again.
When Megatron transforms in the canyon at the end of the episode, his transformation noise seems to be unusually loud, considering how far he was from the virtual "camera". If it was really this loud, it should have echoed like his voice. Not to mention, we shouldn't have heard it at the same time he transformed, since it takes the soundwaves a while to traverse that distance.
When Optimus Prime addresses Megatron at the end of the episode, he is talking very silently, as if his enemy was standing right next to him. In fact, Megatron is standing many yards away on the top of a cliff, and he even has to shout when he talks to the Autobots (although it may just be for dramatic effect).