Sounds.json doesnt work for multiple sounds playing one file

If you make multiple sounds in sounds.json point to one audio file, only the first definition works, and the rest are ignored:

{  
  "ambient.cave.cave": {
    "category": "ambient", "subtitle": "Test",
    "sounds": ["test"]
    },
  "ambient.weather.rain": {
    "category": "weather", "subtitle": "Test 2",
    "sounds": ["test"]
    }
}

If you try using /playsound on ambient.cave.cave, it works fine, however ambient.weather.rain has no changes.