Rek'sai dash through Caitlyn traps?

Just had a match where Rek used the tunnel creating dash, and just plain went through my trap, setting it off, but not being immoblized at any point during or after the tunneling.

Seems like a bug to me.

Maybe it's intentional that creating the tunnel just ignores crowd control, yet nothing I know of states that it does or is supposed to. In if it's supposed to, then Yay @ Well Balanced design, I guess. I don't recall anyone else's movement effects (except Sion's ult which explicitly states his unstoppability, or Vi's ult) just outright ignoring these traps.

I swear I've seen more than a few forward dashes THROUGH projectiles (not Flash or Ezreal blink or Kass ult) having the same issue of the projectile just passing through the character, despite both the beginning AND end points being in its path.