Ghostwrithe and Eldritch Battery Interaction

Unsure if this interaction is intended but Eldritch battery states that it converts ALL Energy shield to mana and Ghostwrithe states that it converts 50% of maximum life to energy shield. when you take eldritch battery with Ghostwrithe to try to turn life scaling into mana scaling. you only gain the energy shield from the base item of ghostwrithe as mana. but the health conversion seems to be happening after the eldritch battery conversion causing you to still gain the HP as ES.

Not a bug. If you view the Eldritch Battery node in the passive skill tree and hover over the word "convert" it clearly states that the conversion only applies to your base ES. It means that it converts ALL of your base ES. That doesn't stop items from converting life to energy shield after the fact, which is what happens in this case.

So order of operations as intended is:

1. Base ES is converted to mana by Eldritch Battery
2. Ghostwrithe or Atziri's Disdain convert life to ES
3. Everlasting Gaze adds ES based on base mana
4. Percentage increases from skill nodes are then applied to both ES and mana

These are intended interactions which many people have mistakenly interpreted as a bug because they haven't read the "convert" tooltip on the Eldritch Battery node.