[Gameplay] Riven's super high jump

Today in game while I was playing Riven I was launched into the air (off my screen) for like 2 seconds and then floated back down like a feather.

I think what happened was Malphite knocked me up while I flashed. Though I might have also thrown a q in the mix (I was sure i was dead so I was button mashing as I am a terrible riven player).

Whatever the case, I was sent sky high and floated back down to the ground without having moved laterally at all. Luckily I lived.

Nevertheless, I'm pretty sure this is a bug.