Sadly I saw this a lot, more recently too as I was raising an alt so I was going through the areas again. Back when I first ran my main, there wasn't much. Now in my alt, I see at least 3-4 standing at every dungeon. And found a few with their "instant teleporting". Managed to "telly block" 2 or 3 of them when they activated their normal teleport during a quest to go to limsa by constantly trading them then they stop moving. Then they go ask and they Really there for hours later when I checked on them lol