Sometimes for some reason, the Spotify app is no longer "open" on my iPhone.  This can happen anytime of course, but it's most annoying when I get in the car and the phone connects via bluetooth.  I expect that the app is still running in the background and that it'll resume playing wherever it left off, but in fact I have to go manually open the spotify app, select my playlist again, then pick the song again.  I know I'm re-opening the Spotify app because I see the logo screen first, for about 3-4 seconds.  If I were simply bringing the app to the foreground, it just opens to the last playlist I was on (for example) rather than falling to the Spotify app homepage.

What's going on here?  Is there a super frequent update being automatically downloaded/installed for the Spotify app?  That's the only thing I can think of that might cause this issue.

FWIW with the same car and phone, I used to have seamless resume of playback with none of this fiddling required.  I just got in the car and drove.  That's how it should be, right?

Your help is greatly appreciated, thanks!