Bug Report ID: #2783629424

A non game braking bug, just a UI bug. In the Skills tab, if you have a minion skill and a buff skill (in my case "Cast on minion death" and "Skeleton Arsonist") both equipped, you can activate the buff then remove the socketed skill in said buff and after that u can add minions Infinitely (Theoretically). It just allows u to add minions but they won't spawn as there's not enough Spirit to summon them.
(The buff still reserves 60 Spirit but doesn't show it and the Minions don't spawn even if there's enough Spirit)