Sleep Mode/Do Not Disturb not allowing Favorites

[Brad_SS123]

I've had the S23U since the release date. I had it setup to receive sound notifications from favorite contacts when in sleep mode/Do Not Disturb mode. About a month or so ago that stopped working. I've tried every setting switch possible on the phone and watch and it still won't work. Anyone else had this issue and have a solution?

[Tourbillon De La Vie]

Did restart the phone and also clean phone partition? 

[SxM--]

Same problem, had the phone for about 1-2 months dnd was working as intended. Then all of sudden it stopped listening to my settings. For example, i have set snapchat notifications to not alert or show pop up but it still shows with dnd turned on. Really annoying when I am sleeping.