Persistent/unchangeable sounds after (re-)opening a world

The bug

When a player leaves a world while a sound plays and then enters any world during the same game session (without closing the game), this sound plays again. But this is a glitched sound, and that's why:

• Its loudness is only affected by the Master Volume slider or the distance from the source of it
• It appears regardless of the world you entered, either at coordinates from the previous world, or "from nowhere", independent of your coordinates (e.g. background music, minecart riding sound)
• Some of the sounds play infinitely, even though the causes of them already disappeared (e.g. elytra or minecart sounds)
• This sound plays in the Pause menu
• This sound stays when you close the world, and plays in the menu. It also persists when you enter a world. This allows to "collect" many long or persistent sounds when entering worlds multiple times.
  • It can cause overlapping background songs, where you have many glitched ones and (maybe) a normal one.
  • If the sound was previously attached to coordinates, then upon exiting and entering other world it will again "move" to them.

All the glitched sounds can be removed by reloading the sound engine (F3+T)

Steps to reproduce:

1. Play any sound or make something play it
2. Pause while it is still playing
3. Close the world and reopen it
4. You'll hear this sound again