Music does not replay in Southwest of Prontera

What this problem is related to? (e.g. Game / Launcher / Website / etc. ):
Game Music

Describe the problem:
The Soundtrack when stopped never plays again when you are on the Southwest

What was the expected behavior?:

List the steps that occurred before the problem appeared:

  1. Listen to amazing music
  2. wait
  3. wait
    4.No sound only darkness

Can you reproduce the problem?:
every time

I think it may be because of the weather changes. The BGM plays only during sunny weather on this map.