Nidalee Cougar W Breaks ARURF Cannon
League of Legends (TM) Client 2019-03-01 09-45-38.mp4
Encountered a bug in ARURF where if you clicked into the cannon as Nidalee in cougar form and rapidly pressed W just as you shot out, you would land with no indicator and would cause no knockup. This allows you to move immediately after landing. There were a few times where it also didn't make the URF manatee sound when shooting.
EDIT: This seems to happen with any champion that has a dash type ability. I was able to replicate it with Sylas on his E (albeit a bit more difficult because it's a multicast)