Minions bug with weapon swap

I have two weapon sets (wand + scepter both). In first set i have 3 brute skeletons + 3 clerics (+ 1 free spirit). Second set - 3 brute + 2 clerics (16 free spirit). Sometimes, when i swap weapon to second set i have only 3 brutes without 2 clerics, which texted - not enough spirit. In that moment i have 54 free spirit which enough for 2 clerics. But its staying disable until i click -1 and +1 to any minion in my skills.

Same with clerics, arsonists and storm mages when i used different skills from different sets. More weapon swaps - more unreserved spirit and less minions. But if i manualy change weapon set 1-2 times its fixed.