Since the last version (or at least since 2.9.8) such an itemid is unfortunately added in the url, and often even with a wrong itemid (homepage, while it concerns a sub-sub-category article to which a separate menu item refers).
To me this is unwanted behavior, maybe a bug. How's that for JCE?
By the way, my customers use those content links to create an anchor link (making use of the File Browser), which unfortunately does not work with a menu link.
Thanks and regards,
Joris