Hi! Idk whether this is a problem from the app, the phone, or the car.
There is a problem I found annoying when playing media through bluetooth in my car. It's been quite a while (ever since v2) that most of the time (say, 7 out of 10) the display on my car refuses to display the correct now playing info. Usually it displays the info of the very first track in my library. The worst happened yesterday when the command from the button in my car refuses to do what it should do (play, pause, next, previous, etc.). One thing I know, though, this problem does not exist when I'm using stock music player.
The only fix I know is to turn off my car and turn it on again. Yes. you read it right. the car, not the phone nor the player.