Minion Count Bug

I'm running the same SRS minion build that I had in the past, but I'm finding that my minions just... disappear.

Randomly, my SRS buff drops off and flame wall doesn't spawn them. I have to port out and back in for the buff to reappear.

Then, during a boss fight, I lost both of my archers and they just didn't respawn, and there was no respawn timer. I went into the minion amount and set it down to zero, then back up to two, but nothing. I knocked it down to one, and one archer spawned, but moving it back up to two caused none to respawn again.

Each time this happens, the buff loss or minion amount issue, I see the spirit amount available to me goes up (as if I manually reduced minion count).

I have no other weapon in slot two, so I'm not accidentally switching weapons and my SRS, snipers and warriors all show a tick in weapon slot 1 and no tick in slot 2 as well

Is this a bug, or am I just missing something that's screwing with this?