We should apply this Fedora patch to really be compatible with freedesktop icon spec: http://pkgs.fedoraproject.org/cgit/rpms/pavucontrol.git/tree/0001-Use-freedesktop.org-standard-icon-name.patch (this affected to setups with only adwaita as provider for example) Thanks
I am hit by this bug too
This is fixed upstream, but not released: I opened a bug. https://gitlab.freedesktop.org/pulseaudio/pavucontrol/issues/50
Version 4.0 just released, should fix this: https://gitlab.freedesktop.org/pulseaudio/pavucontrol/tags/v4.0
it was bumped