Rain sound increases in volume after placing a sign

I was placing a sign while it was raining, and after a couple of seconds the rain sound died out. When I was done typing, I clicked on 'done' and noticed that the rain sound increased in volume (it got really loud), only to return to its normal volume after a couple of seconds.

What I expected to happen was...:
When I clicked on 'done', I expected the rain sound to continue playing with its normal volume.

What actually happened was...:
the volume of the rain sound increased and it returns normal only a couple of seconds.

Steps to Reproduce:
1. Make it rain.
2. Place a sign.
3. Wait for the rain sound to die out.
4. Click on 'done' or press 'escape'.
5. Notice the rain sound playing too loudly.