Warden perspective in spectator mode shows vision

From the Warden's perspective, you shouldn't be able to see anything, at most the vibrations of sound given off by the surroundings. Yet, upon entering spectator mode and clicking on the Warden, allowing you to see the Minecraft world from its perspective, you can see things perfectly normally. Since the Warden is a blind mob, you should not be able to see anything from its perspective.