Reservation efficiency for undead minions doesn´t work properly

I started as minion infernalist with 328 spirit

I wear the boots with 28 reservation efficiency and got the node with 25 efficiency which makes them gigant.

the costs of my spectres doesn´t change, they still cost 100 or 50 efficiency(tested)

a few lvls before it worked fine so either with upgrade of the skillgems or with lvl up there must be something broken.

its not a screen failure

btw all support gem slots were emtpy for testing