The following work-around can be used to avoid the issue:
$ apt-get -f remove libxfce4mcs-client3 libxfce4util4 libxfcegui4-4 libxfce4mcs-manager3 xfwm4 xfprint4 xfce4-utils xfce4-panel xfce4-mcs-plugins xfce4-mcs-manager xfce4 xfce4-cpugraph-plugin xfce4-mixer xfce4-toys xfce4-trigger-launcher xfdesktop4 xffm4 xfwm4-themes
The following work-around can be used to avoid the issue:
$ apt-get -f remove libxfce4mcs-client3 libxfce4util4 libxfcegui4-4 libxfce4mcs- manager3 xfwm4 xfprint4 xfce4-utils xfce4-panel xfce4-mcs-plugins xfce4-mcs-manager xfce4 xfce4-cpugraph- plugin xfce4-mixer xfce4-toys xfce4-trigger- launcher xfdesktop4 xffm4 xfwm4-themes