You probably have spell absorption from being a brenton or from a standing stone or having alteration fully perked. Theres a glitch with spell absorption that causes summons to be absorbed which should give you back your mana but is still annoying.
You probably have spell absorption from being a brenton or from a standing stone or having alteration fully perked. Theres a glitch with spell absorption that causes summons to be absorbed which should give you back your mana but is still annoying.