There's an occasional bug with Arctic Gust's animation where it will also appear to be a second Arctic Gust coming from the player's feet. So far, I have not found any way of reliably reproducing it, and have had occur in the open world, a variety of PvE instances, arenas, when using it to clip weapon combos, and when simply using the power by itself. Here's a short video of it happening in the WotL2 open world area.
