A new Prisoner with 100% health and 10% misery disappeared within 1hr of putting into the cage. Not a werewolf. 100% rogue and drained only once. All food (fish and rats), empty vials and the one full 100% rogue blood vial still in the prisoner cage, but no prisoner. Very weird bug.
Guess I should add it's a fully safe base from outside players unless raiding ofc.