POE 2 Atziri's disdain eldritch battery bug

the helmet adds x% of your maximum health as extra maximum energy shield, eldritch battery converts ALL ENERGY SHIELD to mana. Currently Eldritch battery does not convert the extra energy shield gained from atziri's disdain which is definitely a bug. It should be impossible to have any amount of energy shield at all whilst having eldritch battery because it gets converted to mana.

UPDATE

this same issue applies to the amulet called The Everlasting Gaze

I dont think It's a bug since I've been reading a bit about Eldritch Battery, and apparently " + X % of life or mana is converted to ES " is calculated separately, EB only cares about you base ES.

So technically using this head you can have ES, and still have uses for nodes with % increases on ES.
Same goes for the amulet. :)