Network admin update-core.php doesn't check for plugin or theme updates
|Reported by:||johnbillion||Owned by:||ryan|
|Component:||Network Admin||Keywords:||has-patch early|
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.