ppa:ubuntu-audio-dev/pulse-testing solves the problem for me.
However, now when module-switch-on-connect is not loaded, sound will switch to bluetooth device, but neither System-Settings -> Sound nor indicator-sound make the switch to bluetooth device, making volume control unavailable without switching the setting manually. When the module is loaded, everything works as intended.
ppa:ubuntu- audio-dev/ pulse-testing solves the problem for me.
However, now when module- switch- on-connect is not loaded, sound will switch to bluetooth device, but neither System-Settings -> Sound nor indicator-sound make the switch to bluetooth device, making volume control unavailable without switching the setting manually. When the module is loaded, everything works as intended.