Biolabs, my robotic friends killed the essence carrier, no essence?

[TurtleBee]

In the biolabs with a tech, my robot army killed the essence carrier but it didn't seem to have dropped an essence.

[TurtleBee]

in case it matters, this was a hacked army, not a summoned by special skill robot army

[plutonium1a]

You absolutely sure you/bots killed all of them?

[vic]

I can believe it, it’s not the only bug with friendlies.