WHy cant sion pass through wall with his r whilst being on ghostwalkers active?

[{quoted}](name=Kledy McKledFace,realm=NA,application-id=3ErqAdtq,discussion-id=w3RxXcyN,comment-id=00000000,timestamp=2019-04-07T18:24:59.331+0000)

I'm talking about getting ghost active, then r through a wall (like kayn can q into wall after the ability is spawn or fizz or an dashing character)

Right, it's not a character collision issue, it's an ability collision issue. And like I said, it's that way to prevent ghost from having an outsized influence on the character's balance. Sion isn't colliding with the wall, his ultimate is.