id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
21832	Weird CSS with a large submenu item in admin	ericlewis	azaozz	"With a large menu (tons of submenu pages) positioned at the bottom of the menu bar in the admin, there is some unexpected CSS behavior. 

While on a submenu page (or the top-level menu page), on hover of the menu will move the submenu actually up over some of the rest of the menu items. (See screenshot)

I've traced it to a hover bind function on menus, which doesn't check if the current submenu is already opened before adjusting its CSS. If the menu is already open, it should just be left alone. 

To reproduce, drop this code in. 

{{{ 
add_action('admin_menu', 'register_custom_menu_page');

function register_custom_menu_page() {
	add_menu_page('custom menu title', 'custom menu', 'add_users', 'custompage', 'custom_page_callback', '', 101); 
	for ( $i = 0; $i <= 15; $i++ )
		add_submenu_page( 'custompage', 'My Custom Submenu Page ' . $i, 'My Custom Submenu Page ' . $i, 'manage_options', 'my-custom-submenu-page-' . $i, 'custom_page_callback' ); 	
}

function custom_page_callback() {
	echo '<h3>My Custom Page</h3>';

}
}}}"	defect (bug)	closed	normal	3.5	Menus	3.5	normal	fixed	has-patch