[GAMEPLAY]Yasuo Wind Wall and Vel'Koz Tectonic Disruption

Vel'Koz's knock up "Tectonic Disruption" ignores Yasuo's "Wind Wall". After some testing I found that the projectile that Vel'Koz shoots disappears when it comes in contract with "Wind Wall" but the area marked for the spell still triggers as if "Wind Wall" wasn't there. In the description of the spell it says that it only marks an area on the ground but the animation suggests that it is a projectile. Clarification on Vel'Koz's spells would be nice as it's current state is a bit confusing when I encountered it for the first time. Thank you for your time.

My Experience In Game

1. Vel'Koz casts "Tectonic Disruption"
2. Yasuo casts "Wind Wall" in response.
3. Vel'Koz's projectile for "Tectonic Disruption" gets blocked, but the area on the ground is still marked.
4. "Tectonic Disruption" continues as if nothing had happened and Yasuo gets knocked up.