Angered wardens play the "warden takes notice angrily" sound when hit in survival on top of their hurt sound

This didn't occur during Minecon nor during the Experimental Deep Dark snapshot, so I assume this is a bug.

 

If you're in survival and hit a warden, it will stack the "warden listening" noise on top of its damage noise. It's especially noticeable when hitting them over and over

 

Before only the hurt sound would play, as with any other mob.