Liliana Death's Majesty ability change?

RiverLethe

I used to be able to use non-zombie creatures in Liliana Death's Majesty, use her first ability Anoint to destroy them and bring them back with the zombie subtype. If they were sent to the graveyard again, they used to retain the zombie subtype so that her second ability Raise Zombie still worked on them. Creatures now lose the zombie subtype when they hit the graveyard, so that her second no longer works the same way.

Was this intentional or an artifact of some other issue?