[GAMEPLAY} Janna ultimate does not push away knocked up enemy champs

exact time on replay - 18:20

1. i placed my Q tornado to charge,
2. released tornado.
3. tornado knocked up 2/3 enemy.
4. same time that enemy was knocked up i used R , but the 2 enemy champions that were in mid air were not pushed away. the 3rd one was pushed away.

I don't think it's intended to work that way :)