music bug

I've just hit perfection today and went straight to the summit to enjoy the end game sequence. However when I arrived I was presented with a black background instead of the beautiful mountain view from the summit, and no music playing. Something was obviously very wrong so I compared this to...

Title basically sums it up pretty well. When inside of the Skull Cavern ever since 1.6 released, going down a floor would cause any playing music to stop playing. It is very irritating as the music makes the skull caverns far more amusing. This seems to randomly occur as some times descending a...