Yasuo's Wind wall not stopping Brand's Ult

I was on live servers (NA) playing an ARAM game. I had Yasuo and the other team had Brand. Twice Brand ULTed me or someone near me and I reacted with his (W) Wind wall. Both times Brands ULT went through the Wind wall. Unless things have changed, Brand's ULT is a projectile and should have been stopped by Yas' (W).

Here is a link to the match history: http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/1961374570/202301284?tab=overview for champs/items/skills picked.