By running pulseaudio preferences from console I get following issue:
(paprefs:4487): GLib-GIO-ERROR **: 20:59:44.019: Settings schema 'org.freedesktop.pulseaudio.module-group' is not installed
Trace/breakpoint trap (core dumped)
I have tried to reinstall paprefs or pulseaudio - does not help.
This is fresh installation from yesterday, downloaded from manjaro arm sources, flashed by raspberry imager from another linux pc distro.
I used previously xfce manjaro arm on the same raspberry device since 2 years with no issues (unfortunately something crashed too serious, for novice like me so I did a format).