Going to "Application Menu" -> Settings -> Panel Cause the "Add to Panel" Dialog coming up rather than the "Panel Preferences". Same applies if you start the "Settings" application (with the icons layed out in a grif and where you can change Preferences of your global Xfce4 setup). In that category "Add to Panel" Dialog pops up as well rather than the "Panel Preferences" one. I really don't want to add something. I am more interested to customize all Preferences for all Panels.. How would you end up adding a Panel, if no panel at all exist on the Desktop ? (ok command line but that's not the point)...
With 4.13.1 it definitely opens the Panel preferences dialog. Which version are you using in what distribution?
Yes the issue is gone. Must've been a transition issue from dbus to gdbus. This report was opened for the GIT Version that I compiled around 1-2 days from where I reported this issue. The panel was in the transition from dbus to gdbus that time and the issue has shown up for quite some time. But it's gone. the bugreport can be closed.
Ok, closing then.