GamePlay potential Vi Ult Bugs( Vi can be displaced)

I'm actually not 100% sure this is a bug, but these things have never happened to me before 9.5 so I figured I would report it.

During a couple of recent games I've played as Vi, I have been Condemned away by Vayne as my ult was still in progress. It doesn't cancel the ult when this happens, the damage and CC still activate, but you are significantly displaced and can potentially be stunned against a wall.