So I was just Moon Walk PVPing with my friend when I grabbed respawn anchors to blow him up. I accidentally blew myself up when I respawned in the same spot I was before (I did not get a death screen) and was invulnerable to all damage. All my stuff and armor were on the ground but nothing did damage to me (I could still pick up my stuff and use respawn anchors. I could still mine and do damage to it. I was immortal then. My name tag was also near my feet.