Skill Level Bonuses from "Prism of Belief Diamond" Not Functioning (Elemental Weakness & Enfeeble)

The Elemental Weakness​ and Enfeeble​ skill level bonuses provided by the Prism of Belief Diamond​ do not apply to the character, rendering the item's modifier ineffective.
This is a critical bug​ that severely impacts gameplay, as it nullifies a key property of the item and undermines build effectiveness