How do you know? Perhaps the developers intended that if 3-4 Guardians of Order are on the path, they all need to be defeated? Or maybe they thought that a shifted Guardian of Order near a teleport doesn't need to be attacked? Please don't present your assumptions as facts in the future.
I, being naive, assumed that the shifted guardians on inter-zone transitions were errors in the generator. But it turns out that it might have been intentionally designed by the developers to allow players to bypass the Guardians of Order without using any flights, Dimension Door, or other such things. Well, it's an interesting thought, perhaps even a brilliant one. How could I not have figured that out myself.