happened in all betas for me too, only rebooting phone fix it, and it's annoying to have to do that
Sony Xperia XZ (F8331)
Android 8.0
EDIT: if I disable DVC I don't need to reboot the phone, but it sounds horribly without it, if I want DVC enabled I still need to reboot the phone to make the sound go through the headphones
the sound through speakers instead of headphones happens time after stop listening, not sure exaxctly when, just know that when I want to hear music again this crappy bug happens
@invaderzim maybe you want to try that, I hate no DVC, but disabling it definitely "fix" it
@maxmp @andrewilley @clever_man