Duo bosses doesn´t drop any loot

Have had this happen to me twice now. Killed the bosses in Derelict Mansion more or at the same time and doesn´t drop any loot. Have had similar bug happen with other bosses that appear as a pair. The Twin Millers, Pitlord and his skeleton mammoth. Feels really bad when you´ve put a lot of time and then risk jucing out the map just to not receive any rewards.

Just happened to me as well

Still happening, now also happened with the Sealed Vault Deadly boss. Died at the same time and therefore not giving any loot.

PLEASE FIX THIS!!!!!