Well this bug i dont know when will Samsung fix but it is very annoying. When you have Bluetooth connected to any sound devices you wont hear notifications on your phone. I have Samsung Galaxy Note 8 running Android 9 and Galaxy Earbuds+ which were recently released. I have Good Lock downloaded almost a year ago and there was a option when it use to come sound via Phone as well as Bluetooth and we have option in Sound Assistant that we want to only enable Alert through Headphones only and use to work with charm. I dont know where did you guys mess up with this but it is very annoying.