Ghostwrithe Unique Robe + Eldritch Battery does not remove all ES

As the title says, with both the unique robe and EB you get 50% of your life as ES, and also get it converted to mana. For example if you had 100 hp and 100 mana before equipping the robe, you will have 50 hp, 50 es and 150 mana, ignoring es granted by the robe.

Made a post as well about it, so hopefully it gets fixed :)