Both Riven and Yasuo can "dash" through it when they are not meant to be able to. Yasuo can E through it and Riven can with any of her Qs, not just the third. Maybe more champions can but these are the 2 I know of.
ReshiKillim1 votesTaliyah, Jarvan, Anivia, and maybe Trundle, all have their "Terrain" coded as a minion.
JavelinJoe1 votesbut you cant e through them as Yasuo or jump them with Riven's 1 and 2 Q
ReshiKillim1 votesYou can actually get over all of them as Yas if there is an enemy standing close enough to them, Vayne can also tumble through all of them but Trundle's pillar (and maybe Taliyah's wall), and Riven can get over the rest that aren't Taliyah or Trundle's. Though it's extremely hard to do in the heat of a fight, you can actually do it.