Duplicate minecart sound

• What I expected to arrive was: *
  The sound of the minecart had stopped after leaving the map.

• What really happened was ...: *
  The sound of the minecart continued even after leaving the map on the main menu.

• Steps to reproduce: *
  1. Open minecraft 17w50a
  2. Start a solo part
  3. Roll a minecart nearby
  4. Leave the world
  5. Return to this world
  6. Leave the world again