There are now two mounts that show on the ground despite having all mounts hidden in the options. The Vulrich mount and the Teal Skystrider. I don't have a Vulrich myself, but i just saw a player run by with one on and running across the ground. My teal skystrider shows no matter what settings I have in options, both with mounts hidden AND with an appearance mount equipped, the cute little ugly abomination shows up.