I'm having the same issue. I just got my first Samsung after moving away from Apple. All seemed fine then did an update set up bixby and now they are only working intermittently. It's driving me insane as I'm missing messages on "messenger lite app" this morning I opened fb app and noticed I had a red notification on the msngr symbol with the main fb ap. I didn't get a sound notification for this or a red number or for on the actual messenger lite app only saw it once I n the main app it's self. Main fb notifications sent working either... only there once I open the app and still not showing in notificatio n centre or red dots on ap.. Help!
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