Well, I don't know, I'm first or not.
The story:
I played the Music disc Pigstep. And then, I'm writed:
/fill ~ ~ ~ ~10 ~10 ~10 minecraft:air.
The jukebox dissapears, and the music disc falls to the ground. But the music didn't stop playing.
I tried my best to explain. Bye, and I hope this bug will be fixed

UPD: The disc dissapears too with the Jukebox

UPD 2: This works with every Music Disc