Incomplete Mirroring

If the world is mirrored, then EVERYTHING within it should be mirrored, including, for example, the arrangement of furniture in the room where you live, the direction of the Sun's movement in your window (e.g., if from your room in reality you see sunrises, then in your dreamt room you would observe sunsets from the window), and so on. However, this does not occur — in a Dream, we perceive everything as we are accustomed to. North and south switch places, while west and east remain unchanged. Regarding the furniture in the room: it genuinely remains in its position. This is one of the bugs in the Dreaming program. Only large areas are mirrored, but smaller ones, for some unknown reason, are not.