Sion- Mordekaiser Bug

Hey,

I was playing a game a few days ago near the release of the new Sion. I was playing Mordekaiser and when I ulted the living sion he died, but his passive kicked in allowing him to keep smashing with no ghost rewarded to me.

Confused I wondered if it what would happen if I ulted sion while his passive was kicking in:

Sion's ghost is rewarded as the undead sion dies, but the ghost flickers away immediately.

Unsure if this is a reoccurring bug or one time bug, but thought I'd share.