Stun Threshold on Energy Shield

Utilizing the Keystone Ascetism (Stun Threshold is based on 30% of your Energy Shield instead of Life) and Self Mortification (Gain 20% of maximum Energy Shield as additional Stun Threshold & 20% Increased Stun Threshold while on full life) do not appear to be functional.


At the following values:
HP: 1000
ES: 3000
Effective HP for Stun Threshold: 1900
Additional Stun Threshold: 44% of Maximum ES (+1320 Stun Threshold)
20% Increased Stun Threshold


It seems to reason the additional stun threshold is either not being accurately calculated, or is extremely underweighted compared to the base stun threshold calculation.

The outcome is a melee ES based characters being constantly stunned without the use of a charm. It seems to also reason that an anti-stun charm should not be mandatory for a melee build when charm slots are highly restrictive and "rare".