Love the mini, but Bluetooth leaves a lot to be desired. I have cabled headphones, but have some situations where I need Bluetooth, issues it has include:
1: Cutting out and stuttering when two headphones connected and a flac plays
2: If paused for more than a couple of minutes, no audio when playing again.
3: Regularly disabling Bluetooth in the settings automatically
4: Occasionally forgetting headphones entirely.
On the latest 2.80 - no improvement.
I've learnt to not pause using the bluetooths controls as it will either not start when I hit play or it suddenly develops connection issues. This is with different bluetooth sets. I only use the mini's controls now. Yeah it seems to randomly turn off bluetooth for no reason I can work out. It hasn't forgotten my sets as such but I have to start the mini before opening the bluetooth headset case or it won't connect without turning the mini's bt off and on.
It can't pair with my jbl tunebeam 2 earbuds. With 2.80 too.