Hello.
1. There's a small bug that doesn't allow the "Music" app to show the mini player in the notifications bar. It has been doing that ever since the software update.
2. The phone detects that a notification gets received, informs me via audio and with the flashing blue light, but, whenever I check what kind of a notification it is, there's nothing to check and the blue light stops flashing as well. And when I put my phone down after turning off the screen, the same thing happens. I decided to turn on the Digital Wellbeing app to turn on "Do Not Disturb" mode automatically so I can sleep at night. And during the day I turn off the sound of any notifications so it doesn't disturb me during classes.