KDE Plasma volume changes don't work with pipewire
Testing pipewire under KDE Plasma 5.19.5, I find that global volume changes aren't working well. (They were working fine with pulseaudio). Hardware volume keys don't work - the volume gets stuck. Sliding the master volume in the applet, as soon as one lets go of the volume, it bounces back to what it was. For me, that
Changing the volume using pavucontrol (and pavucontrol-qt) works. Whatever the volume is set to using these apps is the value that the kde volume is "stuck" at.