Created ticket #16841 on Core Trac:
manually created user roles not showing in author dropdown irregardless of ...

Created ticket #16772 on Core Trac:
Enabling support for Gallery format removed Gallery custom post type

Created ticket #13040 on Core Trac:
author.php doesn't recognize custom_post_type posts written by user

Created ticket #12652 on Core Trac:
Arranging subpages in wp_nav_menu UI