Hello, It seems as though Ursa Furiosa's exotic trait is not working in game currently: (Note: I did this with a grenade stat of 130) this should offer maximum energy returns. 1. I ran a few solo activities with the class item with Spirit of the Bear and the actual exotic armor itself. The blocking refund is basically non-existent, and when it does manage to proc its one tick of like... 10% grenade it seems. 2. When you do end up letting go of the unbreakable shield, even with a full bar you only get a refund of about 20-30% of your grenade back.