Aura of Decay/Armour shred

The armour shred of Aura of decay seems buggt,
the shred on enemys seems to only go up to around 32 while the self inflictet shred seems to stack inconsistend → after a while it seems to ramp up exponential quick on the own charackter (usally after area transion or after cleansing the buff with a flask (chance to cleanse ailment on flask use mod) )