Ghost disc: a music disc playing NOT on a jukebox

DESCRIPTION

when a playing music disc is pulled out by a minecart with hopper, the music is still playing.

STEPS TO REPRODUCE

1. Place a rail.

2. Place a jukebox above the rail.

3. Place a minecart with hopper on the rail.

4. Use a music disc on the jukebox.

5. Listen, and check inside the jukebox and the minecart with hopper.

6. (Optional) Repeat step 4, 5.

7. (Optional) Break the jukebox.

OBSERVED RESULT

While the disc is in the minecart with hopper, not in the jukebox, the music is still playing.

EXPECTED RESULT

The disc is in the minecart with hopper, not in the jukebox, so the music stops.