Map bosses not dropping anything

I had a map boss not drop a single item for me tonight. I can't remember his name, but it was the same one that's the first Trials of Sekhemas boss. Not 1 thing, and I checked to make sure I was till showing loot and nothing at all was there.

I also had an epic battle with a monsters that was chosen by the wisp that went on for quite some time since he had mana drain. I finally won and he didn't drop one singe item, not even gold.

Thought I would let you know in case this was a bug. I was thinking at least the map bosses should be dropping a waystone, but to not drop anything at all seems bugged.