I was happily exploring a cavern under Novus when I was suddenly shot straight up through the rock and soil, high above the planet surface.  Gravity brought me down quickly to the surface, but my collision with the ground caused my untimely death. This happened 3 times before I started to get afraid to go below ground on this new moon. Could not find this bug in a search of the forum, but it was hard to find a decent search term.