CarPlay always launches Pandora automatically

I have a 2017 Honda CR-V with CarPlay. Whenever I get into the car and plug in the phone through USB, CarPlay will always launch Pandora, even if I was using a different music app the last time I drove.

This is very inconvenient, because CarPlay will not allow me to just go to the home screen and choose Spotify (it will take me back home every time I try it), instead I have to manually unlock the phone, close Pandora, and then launch Spotify.

Does anyone know how to prevent CarPlay from launching Pandora automatically without having to uninstall the app?

Any help is appreciated.