"Increased Despair Curse" eldritch implicit not rolling on helmet.

The "Increased Despair Curse" eldritch implicit seems to not be able to roll on my helmet.
At this point I have used various hundreds of every ember ichor (different tiers) I found on a Ilvl 84 Lion Pelt.
I have never seen the mentioned implict roll on said helmet (yet I have seen every other increased curse effect roll on many different tiers.

For the matter here is the item on its current state, copied from the game (with ctrl + c).
It may help.

Item Class: Helmets
Rarity: Rare
Mind Ward
Lion Pelt
--------
Quality: +20% (augmented)
Evasion Rating: 456 (augmented)
--------
Requirements:
Level: 72
Str: 111
Dex: 155
Int: 70
--------
Sockets: G-W-R-G
--------
Item Level: 84
--------
Malevolence has 30% increased Mana Reservation Efficiency (enchant)
--------
+1% to maximum Lightning Resistance (implicit)
Enemies you've Hit Recently have 69% reduced Life Regeneration rate (implicit)
--------
+52 to Intelligence
+118 to maximum Life
3% increased maximum Life
11% increased Rarity of Items found
+21% to Chaos Resistance
Nearby Enemies have -9% to Chaos Resistance
--------
Has Mask of the Tribunal Skin. You can reclaim this by shift-clicking this item.

I know this may be insanelly bad luck but at this point and given the amount of embers I have put on the helmet I genuinelly believe something may be wrong with said implicit.