Azir Ultimate is bugged.

I know Azir's ultimate is generally impassible, but among not being able to broken wings over the wall with Riven, I was also unable to flash over his ultimate. I'm not sure if this is just sometimes a bug, and I was unlucky or if it is truly broken, but I figured I should report it so it is at least known. I wish I saved my video but I timed my flash as soon as he casted it, so one of two things should have happened. I should have completely dodged his ultimate knock back and damage, OR I should have been pushed back slightly with damage and still flashed through it just after the damage to myself. It almost looked like his ultimate cancelled my flash, even though I flashed after he had thrown the wall.

Thanks for looking into this.