The Life leech to Force shield (I think its called Warlock? Not sure since i cant launch the game at the moment) passive seems to be bugged. It seems to work properly up until you reach maximum shield when using the spell annihilation and then will keep "recharging" from zero to full over the course of 2 seconds or so resetting as long as you channel the spell. This unfortunately makes Force Shield pretty much useless with this combination because you can rng take damage at 1% force shield when its "recharging" (which it shouldn't be doing. It should stay full at 100% if not taking damage) and get 1 shot because you get hit at 1% shield instead of the 100% it should have been at.