RTO Black Node - Lose not more than 5 Creatures objective bugs

I lost one creature but killed several of my Opponent resulting in

losing my objective. It Looks like it counts all killed creatures.

Screenshot and komplette battlelog available.

@naabaldan did you submit a ticket? If so, you can include those there.

@naabaldan
Thank you for the feedback.
We’re already investigating.
Do you know what cards were on the field when this occurred? If you could provide a card list for your deck that would help us investigate this issue.