I've found a workaround on http://<email address hidden>/msg1707794.html :
put the following in openbox autostart.sh or similar "xprop -root -remove _NET_NUMBER_OF_DESKTOPS -remove _NET_DESKTOP_NAMES -remove _NET_CURRENT_DESKTOP".
I've found a workaround on http://<email address hidden> /msg1707794. html :
put the following in openbox autostart.sh or similar "xprop -root -remove _NET_NUMBER_ OF_DESKTOPS -remove _NET_DESKTOP_NAMES -remove _NET_CURRENT_ DESKTOP" .