id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
18876	Network admin update-core.php doesn't check for plugin or theme updates	johnbillion	ryan	"Visiting `wp-admin/update-core.php` on a single site install or on the main site of a network install will fire off update checks for everything -- core, plugins and themes.

Visiting this screen within network admin (`wp-admin/network/update-core.php`) only checks for updates to core. I believe this is unexpected behaviour based on discussion in #14764 and it's inconsistent with the behaviour of the screen on the main site or a single site installation.

The problem occurs because `wp_update_plugins|themes()` are only added to the `load-update-core.php` hook when `is_main_site()` is true.
"	defect (bug)	closed	normal	3.4	Network Admin	3.3	normal	fixed	has-patch early	scribu kpayne@…