LG G6 Stop Plaing Music

[alebec]

Plan Premium

Device LG G6 plus

Operating System Android 8.0.0

My Question or Issue

Since I have my new LG G6, Spotify stop playing music without reason.

I use Bluetooth or cable hearphone.

maybe android 8 restrict app usage : I see a message like 'spotify use battery and is not in Foreground ' ?

Sometime Spotify stop, but is still show as playing in top bar. 

Sometime Spotify don't stop but 'top bar with track playin diseapear'

Sometime spotify Stop, 'top bar' stay display and is not updated if i relaunch soptyfu and restart playin (top bar not changing track bu music plays)

In each case, there is no error message !

Any Idea ?