Killing two bosses at once during maps drops zero loot.

Hello, so I'm playing Fubgun's poisonburst pathfinder and I've noticed the 1 issue with the build is I keep running into a bug where if you have a map where two bosses spawn in the map boss fight and you kill both of them at the same time (since I'm using poison AOE it has happened ALOT) you get zero loot from them INCLUDING gold. I don't know why this is happening but please fix it for us. I just did a T15 Derelict Mansion and didn't receive a single piece of loot from the bosses because they both died at the same time even though I tried to time their deaths slightly staggered apart because this is my FOURTH time of this happening just today since I started doing end-game maps.
So far I've had this happen with the giant lich boss and his steed, Varloch & Avelyne, and the other versions of the duo boss fights.

Unsure if it's an issue with the boss kill conditions, or me using herald of plague and herald of blood.

I can confirm I've had the exact same issue and just finished a map having killed two bosses at the same time with no loot from either on the same pathfinder build