Clarity: Can't Windwall start in front of Yasuo?

No I'm not one of those Anti-Yasuo people, I think he's cool and like the ability, I make this thread hesitantly and for one reason only;

Windwall right now has great functionality as a 'Wall' spell, but also seems to be too much of an 'Invulnerability' spell for him personally. It spawns right on top of him and is erasing stuff that has already passed the logical 'Wall' area of the spell.

For instance I played a Jayce game today, enemy Yasuo consistently erased empowered Q's even though they looked dead-on and were touching his model. He blocked empowered Q's on reaction from fog of war. He seemed like a skilled Yasuo player but a few times I felt really cheated.

I feel like this ability could use some "seperate the good from the great" adjustments in where the wall spawns, and tightening the required reaction time to block spells