Yorick`s client damage bug

If you play Yorick and look up your damage dealt to champions you might get surprised that there is a number way too high to be true. I dealt over 450000 damage after one game wich is clearly a bug. This could be the fact that if you ult urself and die after you get revived and then die again you take 100000 true damage so the ultimate ghost dies instantly. Maybe this damage dealt to urself is convertet into damage dealt to champions and thats why the endgame damage number from Yorick is that high.

I think it is nothing huge that impacts the gameplay but it kinda confuses the actual numbers when you look at the statistics in the end.