Unpublished documents accessible via url

I’m new to MODx so excuse me if this is a stupid question

All the pages created in MODx have 2 possible states: published and unpublished.
As I understand it "published" page is one visible in menus and accessible for web users. "Unpublished" page is opposite - it doesn’t appear in menus and it shouldn’t be accessible by users.

But as I see even unpublished pages are accessible via URL.

For example if I have a page (id= 6, alias=contact) that is unpublished I still can access it simply writing URL in a browser ( index.php?id=6 or contact.html with friendly URLs on).

Is this a bug or a feature. And if it is a feature is there any way to switch it off so unpublished pages are not visible?

Log out of the Manager and try it again

There is an option in the Roles configuration to prevent a manager user with that role from seeing unpublished pages, but the "administrator" role’s users can always do so.

That was quick.

Thanks a lot