[GAMEPLAY] Yasuo knockup is cancelled by Illaoi ult

When Yasuo has whirlwind charged and Illaoi Ults she doesn't get knocked up.

1. Yasuo has empowered steel tempest.
2. Yasuo knocks Illaoi up while Illaoi ults.
3. The steel tempest sound plays and does damage. However the animation doesn't play and Illaoi doesn't get knocked up.

I've tried this in 2 separate games.