Keeper of the Trove, no drops from shelled crustaceans

The first form can't drop loot unless it dies in a way that prevents the second form spawning (shatter, explosion). There's currently a bug that prevents the second form counting as part of the pack (and thus having the bloodline), so while it will drop loot, it won't currently be able to drop the rare. This bug has a local fix that's being tested, and will hopefully be ready to deploy soon. In the meantime, shattering or exploding with Infernal Blow similar on the shield crab will prevent the sandspitter spawning and should make the first form drop loot.