Potential bug with Summon Holy Relic of Conviction?

So after leveling with summon holy relic through campaign, I can confidently state that the relics are not receiving my buffs from vitality and never regen health. I also noticed when I'm fighting bosses or certain rares that do elemental damage, they get deleted, despite me running purity of elements with a huge amount of aura effect.

My life regen per second from vitality is around 400/s currently, so I should be seeing their life increase significantly, yet it never does. Unfortunately I have no way to verify if other auras I'm providing them such as hatred are actually doing anything or not, since we have no way to actually verify damage they are doing. For all I know it could just be bugged on Xbox.

Can someone from GGG let me know if relics do not receive benefit from vitality? maybe they are just incredibly squishy despite me stacking lots of elemental resistance to them via purity of elements and other auras. A sanity check would be appreciated.

Thanks in advance.