Thank you for your bug report, that's not really a bug, the background capplet .desktop has "OnlyShowIn=GNOME;Unity;", not sure why if that's a decision from the xfce team to filter most items out or a bug though
Thank you for your bug report, that's not really a bug, the background capplet .desktop has "OnlyShowIn= GNOME;Unity; ", not sure why if that's a decision from the xfce team to filter most items out or a bug though