Doryani Lightning Bug (Almost killed me on HC) *VIDEO*

Link to video of bug below. Lightning beam sustained after his death and almost killed me. This was on a Stone Citadel. It would follow me until i exited the boss room.

https://www.youtube.com/watch?v=A3iH-hh2nV8

The lightning was going i believe during his death and continued to do so after. It also seemed to do way more damage during his dead phase than when he was alive. Almost killed me on HC. Pretty rough!

any acknowledgement of this?