Some of the mesmer ports (possibily for other profs aswell) when used have clipping issues, and you end up under the map swimming around.
This is particularly the case for Staff skill 2 on the mesmer.
I believe this particular issue is something that we need to fix on a case-by-case basis; in other words, it really helps if you can let us know exactly where you were when this occurred via a video/screenshot. Alternatively, if you bug it with the in-game bug submitter, we’ll automatically get your location and be able to investigate it. Thanks!
