Other than this forum is there some other place to pass on feedback? It kind of makes mage armor worthless on an EK.
Id drop it in as a bug on the technical forum as well. Since we don't know intent and I dont believe anything in the language on the spell says otherwise, we have to default to 5e rules. By that measure, its a bug.
edit: using the feedback tool from the game launcher goes to a help desk and seems to be a more direct route too. I actually get responses from them there.