Upon using the Path:Pit masters arena it ports you to the interior of the Field of the dead Arena directly. Then if you leave the zone to go to a minigame or a raid finder, upon leaving that minigame or raid finder it moves you back to the previous location you used the path from to begin with. So if I used the path from Dragon Spine, then join a minigame from the arena, I am ported back to dragon spine after said minigame and the path remains on Cooldown.
Basically the bug lies in the fact that when you rejoin this zone from a minigame or RF it automatically moves you to your last recorded outside location.
Suggestion for easy fix: Move destination path node of “Path: Pitmasters arena” to outside the arena entrance.