When Xfce 4.13 starts misbehaving and you can not get activate items from Panel 0 with your mouse, you have to log off with the command line.  

Problem (other than the above): `xfce4-session-logout --logout`  "always" saves your session, so you are forced to go back and log out with the gui several times before you get everything removed that you do not want to start up automatically.  This is especially dangerous as if you accidentally run a second incidence of Osmo as your Osmo database will corrupt.  

And since the GUI already has this feature, it should not be to difficult to add it to the command line.

Many thanks,
-T

My notes:

How to log out of Xfce from the command line:

$ xfce4-session-logout --logout


Help Options:
  -?, --help               Show help options
  --help-all               Show all help options
  --help-gtk               Show GTK+ Options

Application Options:
  -l, --logout             Log out without displaying the logout dialog
  -h, --halt               Halt without displaying the logout dialog
  -r, --reboot             Reboot without displaying the logout dialog
  -s, --suspend            Suspend without displaying the logout dialog
  --hibernate              Hibernate without displaying the logout dialog
  -f, --fast               Log out quickly; don't save the session
  -V, --version            Print version information and exit
  --display=DISPLAY        X display to use