I've recently come across some strange behaviour of my Joomla 3.6.5 installation. I've noticed that (with SEF on) any article preceded by its ID is displayed if called directly by its URL, and not only by following the path laid out in the menu item.
For example, if according to the menu item, the correct path would be:
the article shows up under any menu item and even without it. So
return the body of the article. In these cases, however, the title set through the menu item is maintained, only the the text of the article is rendered. Interestingly enough, only the part after the 'read more...'
When I switch off SEF, the behaviour is the same when I replace the article's ID an title in the URL.
I find this behaviour rather peculiar. It is causing me some trouble, as the Google crawler indexes these pages. As I run a multi-site installation, some articles of one site appear in the vest of the other (and can be accessed via Google search), which is rather annoying.
Is there a way to prevent that from happening and displaying the articles only according to the setting in the menu item?