Custom sound not playing when live activity is updated

Hi,

I have added custom sound in notification and it's working as expected. Have added same in live activity and it's not working.

Normal Notification:

{"aps":{"alert":"hi some message","badge":42, "sound": "sound.caf"}}

Live activity update:

{
  "aps": {
    "timestamp": 1666771735,
    "event": "update",
    "alert": "hi some message",
    "sound": "sound.caf",
    "content-state": {}
  }
}
Custom sound not playing when live activity is updated
 
 
Q