10.12 Ascended Necromancer Perk not interacting with other necro perks

I’ve allocated the amalgamation perk after ascending necromancer. At the start of comabt I’m beginning with -1 stacks. As soon as my minions get a turn the amalgamation stack disappears, despite having the Midnight bargain perk allocated. I also have Army of the damned allocated, and at the start of my creatures turns they aren’t gaining a stack of amalgamation either. At no point are the amalgamations ever triggering their damaging effect.

Is this intended?