CiviCRM 4.6.2 on WordPress 4.2.1 When I'm logged into CiviCRM as an admin user, I cannot register for an event. I get a page with multiple sections, some with Private: Event Name, others are just Event Name without the Private on the front.
Log out, click the Event Registration and everything loads beautifully with all the fields showing up correctly.
BTW: Upgraded to CiviCRM 4.6.6 and WP 4.6.6 since then, same issue. As an aside note, my dev site doesn't have this issue. So it's something very particular to this one install.
Update: My dev site exhibits the same behavior when a Post is created with CiviCRM embedded and marked as Private, as the the Answer points towards.