Jayce E and Yasuo Ulti

Not entirely sure if this is a bug, but I was playing Jayce, and at one point in the game yasuo knocked me into the air, and at the same time I used E on him to knock him away. Then he ulted me in the middle of being knocked away. He stayed in place as he attack with his ult though. So basically, we were at two different locations while his ult was activated, and I stayed knocked up in the air for the duration, taking damage. Visually though, there was no physical contact as I took damage.