No loot from double bosses

I now had multiple instances with a double boss (necro+mastodon and double miller) which dropped no loot at all.

Because I found some other people having the same problem in the past I believe that this was either never fixed or the bug was recreated through one of the recent patches.

Edit: It might only happen if both die at the same time.

Same thing happen to me, only on double bosses and killed at the sametime.

So many threads about this issue and absolutely no care from the developers a month into the league...