Currently the modelPageContent offers a flagin_navigation, which means that in a multi-language setup, it is possible to create different navigation menus depending on the language. This to users is quite confusing, because one would assume that the menu structure should be independent of the language.

It moreover makes it even more confusing if versioning is enabled, because then that flag is versioned. We for instance had to disable the button "Show in Menu", because versioning and showing/hiding from navigation just doesn't fit. Please check#7780 for details.