Why are users seeing edit pages outside of Admin UI I just tested the editorial process for authors on our new web site.  For some reason, although admins and editors see pages in the normal Admin UI (using the Seven theme) when editing a page, members of the author role see it in the public UI that displays for non-logged-in users browsing the web site. 

At /admin/appearance I have Administration theme set to Seven, and I have 'Use the administration theme when editing or creating content' checked.  

Why would this setting take effect for admins and editors, but not authors?
D'oh.  I somehow missed this before in the permissions:

View the administration theme

Admins and editors had this permission enabled, but authors did not.  Enabling it for authors fixed things.