Riot overwrites Defender on Rising Tensions - Gruul Clans [Can't reproduce]

I had bounty agent in my deck. When I drew the card, it was given riot. When I played it, I was asked the standard Riot question. I chose +1/+1 since I already had an agent on the field. At that point, Bounty Agent lost defender.

Thank you for the feedback!
This issue is now under investigation.

Couldn’t reproduce it.