The bug
Sometimes when you go underwater when music is playing, the music cuts out and stops. This might be because of the underwater music but the underwater music doesn't cut out when you go out of water.
Linked issues
is duplicated by 26
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relates to 2
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Comments 27
I also noticed that this only happens in ocean and river biomes, and if you swim into the biome while underwater, the music will stop.
In all honesty, if this is intended more or less, a fade out would be much better.