there is a bug that if you unlock volatile flow and you have echo of starvation fragment on your void subclass while using gyrfalcon hauberk exotic hunter chest if you pick up an orb of power you get devour but won't grant you volatile rounds and your weapons that can use volatile rounds can't stun barrier champions unequipping gyrfalcon hauberk seems to fix it plus activating gyrfalcon hauberk exotic perk doesn't seem to give you piercing rounds to stun barrier Edit: further testing showed that having an overload artifact weapon while you have void weapon surge picking up an orb of power doesn't proc volatile piercing round for void weapons that doesn't have champion mods on active such as LMGs removing void weapons surge or echo of starvation or using non overload weapons seems to fix it but not always having gyrfalcon hauberk in the second test doesn't change the outcome overall something is not right in this combination