Vayne's interaction with Cataclysm

Currently Vayne can stun people into J4's Cataclysm terrain, and she can tumble through it to safety. This seems like a big case of having your cake and eating it too.

I feel that champions that cannot normally travel through terrain shouldn't get a free pass through player made terrain AND have their abilities interact with it. Since there are some awesome combos and cool stuff you can set up with a well played wall/pillar/cataclysm, I think that aspect should stay.