My necromancer is not receiving the extra 20-60% benefit of any of the 3 golem sacrifice options.
I tested it outside of town as well.
Almost all of the other Skeleton Warrior and Skeleton Mage sacrifices work (except 1/2 portions of the essence sacrifice).
I unspecced and specced all 3 points of the passive multiple times, checking my char sheet and tooltip for all 9 sacrifice bonuses.
I receive the default sacrifice bonuses for golem and others fine but nothing from 20%/40%/60% Memento Mori passive ranks.
Max essence and regen sacrifice from mages is also half-functioning. I receive the extra total essence but my essence regen/second stays exactly the same, down to the decimal number.
Memento Mori Passive Bugs
Non-Functioning: All 3 Golem options + regen/second for mages 
Functioning: All other minion sacrifices 