Tame Beast BUG - Can´t Summon Companion

Weapon swap works every time!

Make sure none of your support gems have a mana reservation multiplier. Even if it doesn't have the red "!" it still will block you from summoning the companion. Try removing your support gems and see if that works.

Still not fixed. Have full 130 spirit slider, can't spawn beast. Taming beast is a completely broken feature.

Found the source of the problem. If you have unslotted skill from Smith of Kitava's "Fire Spell on Hit", Deadeye "Mirage Deadeye" or even Bijouborne belt "Cast on Charm use" then you can't activate companion for some reason. Make sure your free Meta skills from ascendancies and items are activated and not deactive.