While playing diablo4 the game will not drop betrayers husk’s. I’ve done dozens of apparitions incursions and it doesn’t drop them. I’m missing out on a lot of boss materials and it makes it so I cannot complete belials boss lair encounters and open chests.
Husks only drop from Belial’s random appearance after you’ve killed a lair boss.
1 husk for low tier bosses, 2 husks if Belial spawned after Duriel, Andariel or Harbinger.