Invincible Rek'Sai tunnel

In my last match, one of Rek'Sai's tunnels was invincible. One tunnel entrance was in our base and the other was slightly overlapped with the outer wall. Perhaps the fact that part of it was on impassable terrain caused the bug, but either way this led to infinite teleports into our base for Rek'Sai. If someone can figure out how to consistently make this happen then it's a pretty powerful exploit. I would suggest a patch to fix it quickly.