There are two annoying bugs regarding the ‘Cyclone’ ability on the bosses in Dark Agartha.
The first is that the cyclone has a tendency to teleport across the platform. Sometimes it seems that it’s not rendered in the right place at first, then jumps to where it should be. It might be related to the family of bugs regarding how Berserk can lead to bosses being rendered in the client with an incorrect facing (which also affects attack telegraphs).
The second is that the cyclone can hit you (and throw you) in a short window after it has disappeared.