Yorick damage dealt and taken

I think these numbers might be a little off... From my understanding, my ultimate does 100k damage to the revenant when the 10 seconds are up, but I don't believe this should be in the damage dealt to champions category. Seeing how I mostly cast my ult on myself, I also had an incredibly amount of damage taken. I don't know if this affects the grading system in any way, but I don't think this was created to behave this way. Apparently, the other 5 people who've played yorick in the past few days have noticed this too, so it must be a recent change.