Kremzeek can kill the same guy twice?

In this mission at 2:42 Siphon's Kremzeek kills Hardspark not once, but twice. And to top it all off, I stole energon from him
Is this a new glitch?

SEIBERTRON - Your Planet For Everything Transformers
https://www.seibertron.com/energonpub/
https://www.seibertron.com/energonpub/viewtopic.php?f=16&t=12028