By default, when I launch Xfce, it uses the menu.xml.hu (or whatever language)
file for the menu, hence I see the menu in Hungarian.
When I enter the menu editor, suddenly the menu becomes fully English.
The editor should bring up the version that is currently active and that
corresponds to my language.
Or, at least if the edited menu can only be in English, it should only be saved
if tell it so, so that I can still quit if I realized that launching the menu
editor wasn't intentional, and then my old menu should remain the same.