As already known, vampire sneak speed perk is removed upon death. This is extremely annoying in cyrodiil where most fights usually ends in large zergs.
Also, after dying and sprinting for a while, your default runspeed becomes the sprintspeed. And if you then zone, your sprint speed is doubled, and it looks like youre speedhacking. This has happened to me twice now.
But yeah, the sneak perk removal upon death bug has to go.
ETA?