Leona's Zenith Blade (W) + Azir's Emperor's Divide (R) = Bugged
Just discovered in a match that Leona's W is capable of "dashing" through Azir's wall (R). As I understand it, his wall is supposed to prevent all enemy movement apart from flashes and blinks.
Not sure if Riot knows about this yet, so please don't rail me if this has already been posted somewhere else.