Mundus stones I tested:
Shadow, Mage, and Apprentice
3 mundus stones which should definitely affect your damage. I used The Steed as control.
I tested on giants, trolls, netchs.
In all cases, my damage (regular and crit) are exactly the same as reported by ESO API.
Have you guys notiiced the same thing? Is this a reproducible issue? Can we get some official word on this bug?