I have Notify During Calls on because I'm often on calls with people, especially during the current pandemic. I use the facebook Messenger app to call my family because it's more convenient for them, however I don't get notification sounds when I'm on call with them. I'll hear a quiet 'beep', no vibration, not using the custom sound I picked. It only works when I'm not in call.
All notification sounds are turned on, but it hasn't changed at all! Even restarted my phone, and it's getting very frustrating to figure out. Please help!