Shatter restoration DH talent doesn't add extra % of healing from souls

if we put points in the talents, we dont get any additional healing, as been told in

Known Issues – Dragonflight version 10.0.2 – Updated December 19

as DH we need this extra HP to survive, especially in pvp, that give us a handy cap vs other classes than can easy heal a % of their hp, such warriors, shamans, paladins, etc…