Why is my Note 5 Notification Muting Intermittently?

[AC Question]

In my sound settings the actual Notification Volume keeps getting set back to mute intermittently. I have reset the volume and rebooted my phone to no avail. Is there certain cache data i should clear or just attempt a master reset? I have had a hard time finding any information on this specific problem (hence the post). This has only been an issue since the new Android 7.0 update.
Any suggestions or guidance is accepted.
Thanks in advance!

 

[mrgeemoney]

I have the same problem with my Samsung s8 when I put my phone on vibrate and take it back off , my notifications get muted. I always have to put it back on and it's frustrating.