desktop settings not preserved after boot
In case 'no picture' is chosen and a background color is selected in desktop-settings, the values will get stored in array 'rgba1' as type 'double'. As decimal point for language 'german' character ',' is used in xfe4-desktop.xml. This will cause an error in xfconfd. As consequence, the file in .config/xfce4/xfconf/xfce-perchannel-xml gets replaced with defaults on every boot and all settings are lost. After replacing manually ',' by '.' settings will be kept. xfconf-query shows version 4.16.0.