I’ve reported the user through the in-game option, but I was just teleported while I was in a dragon race in highsteppe. The user is still trying it, and even took an invisibility potion (starting a portal should remove invisibility imo). I can only guess he was trying to get people outside a safe zone so he could pvp kill me. If someone is in a dragon race they should be unable to be teleported, and probably for a few seconds after exiting the race so you don’t accidentally go into one while loading back to your character.
On a side note, my dragon turned giant size after I was teleported.