Issue with Yasuo. This may be a bug
So long story short, i found out that there is an "issue" with
where if you displace him during his ultimate, he still finishes the animation and still does the damage. I got caught by his knock up and while he was using his ultimate,
knocked him away on a couple occassions. Each time i was still stuck in the air, Yasuo continued his animation and i took damage despite Yasuo now being a fairly large distance away from me.