Interlude - Zelina Corpse Doesn't Despawn

Fighting Zolin and Zelina on Abyssal League sorceress - killed Zelina first multiple times, but her corpse does not despawn. As a result, Zolin continually heals off of already-dead Zelina.

Seems to have happened again after leaving the game (and presumably resetting the instance) and returning 30 minutes later.