Azir vs Yasuo Bug

I recently discovered that Azir makes a great counter to Yasuo , due to his massive range and great harass, this allows for keeping Yasuo too low for an engagement (I found). But theres a glitch in the interactions between Yasuo's E and Azir R, Yasuo can pass clean though it as if it were not present at all, which shouldn't happen as it is a dash, its clearly not a teleportation ability of any sort, and its not an ult or something that I would call particularly unstoppable (Vi, Malphite, J4), so why does this already OP samurai get this one edge over what I find to be one of his largest counters, as without the ability to pin him behind ur wall, he can easily dash over and kill you if you failed to harass him enough. Please address this Riot as I love Azir and I love using him to shut down that oh so annoying samurai which is tough when he can just dash right to you through what is supposed to be a near impassible wall (blinks aside)