Spirit Vessel reduces all heals, lifesteal and hp regen by 60%. But the lifesteal is affected twcie (because heal amp includes lifesteal as well, and then it separately also has lifesteal amp). So right now, lifesteal is reduced by (2x60%) 84% instead of 60%.

Hearstopper Aura's talent has the same issue (assuming that it affectin heals and lifesteal is intended, despite the descriptions implying it affects hp regen only). It reduces lifesteal by (2x40%) 64%, instead of 40%.

Paladin Sword has the same issue. It amplifies lifesteal by 31.11% (2x17%), instead of 17%.