Teleporting Hacker?

[xXRaineXx]

I wasn't sure where to write this...

But lately I've noticed a single character randomly popping in and out from a Gridanian Market Board.

I've taken a SS and noted the name down, but since I am not entirely sure if it IS a hack; I will not reveal the name.

Though from what I noticed, the player randomly pops up in front of MB then disappears in a few seconds or minutes. Even as I am writing this now, the player did this 3 times (to this point).

Okay so maybe I'm lagging and players are popping in an out, but this is not peak time for a N/A server (I'm in Japan).

Or maybe the player is farming a dungeon? (Similar to DD first room farm)?

What do you guys think? Am I simply overthinking this?