Index: css/colors-classic.dev.css
--- css/colors-classic.dev.css Base (BASE)
+++ css/colors-classic.dev.css Locally Modified (Based On LOCAL)
@@ -1261,7 +1261,7 @@
 	border-color: #bed1dd;
 }

-#adminmenu a.separator {
+#adminmenu span.separator {
 	border-color: #D1E5EE;
 }

Index: css/colors-fresh.dev.css
--- css/colors-fresh.dev.css Base (BASE)
+++ css/colors-fresh.dev.css Locally Modified (Based On LOCAL)
@@ -1261,7 +1261,7 @@
 	border-color: #cfcfcf;
 }

-#adminmenu a.separator {
+#adminmenu span.separator {
 	border-color: #e1e1e1;
 }

Index: css/wp-admin.dev.css
--- css/wp-admin.dev.css Base (BASE)
+++ css/wp-admin.dev.css Locally Modified (Based On LOCAL)
@@ -1328,9 +1328,11 @@
 	margin: 0;
 	border-width: 1px 0;
 	border-style: solid;
+	cursor: inherit;
 }

-#adminmenu a.separator {
+#adminmenu span.separator {
+	display: block;
 	height: 1px;
 	padding: 0;
 	border-width: 1px 0 0 0;
Index: menu-header.php
--- menu-header.php Base (BASE)
+++ menu-header.php Locally Modified (Based On LOCAL)
@@ -82,7 +82,9 @@

 		echo "\n\t<li$class$id>";

-		if ( $submenu_as_parent && !empty($submenu[$item[2]]) ) {
+		if ( false !== strpos( $class, 'wp-menu-separator' ) ) {
+			echo '<span class="separator"></span>';
+		} elseif ( $submenu_as_parent && !empty($submenu[$item[2]]) ) {
 			$submenu[$item[2]] = array_values($submenu[$item[2]]);  // Re-index.
 			$menu_hook = get_plugin_page_hook($submenu[$item[2]][0][2], $item[2]);
 			$menu_file = $submenu[$item[2]][0][2];
Index: menu.php
--- menu.php Base (BASE)
+++ menu.php Locally Modified (Based On LOCAL)
@@ -69,7 +69,7 @@

 unset($theme_update_count, $wordpress_update_count, $update_themes, $update_plugins, $update_wordpress);

-$menu[4] = array( '', 'read', '', '', 'wp-menu-separator' );
+$menu[4] = array( '', 'read', 'separator1', '', 'wp-menu-separator' );

 $menu[5] = array( __('Posts'), 'edit_posts', 'edit.php', '', 'open-if-no-js menu-top menu-icon-post', 'menu-posts', 'div' );
 	$submenu['edit.php'][5]  = array( __('All Posts'), 'edit_posts', 'edit.php' );
@@ -152,7 +152,7 @@
 }
 unset($ptype, $ptype_obj, $ptype_class, $ptype_for_id, $ptype_menu_position, $menu_icon, $i, $tax);

-$menu[59] = array( '', 'read', '', '', 'wp-menu-separator' );
+$menu[59] = array( '', 'read', 'separator2', '', 'wp-menu-separator' );

 if ( current_user_can( 'switch_themes') ) {
 	$menu[60] = array( __('Appearance'), 'switch_themes', 'themes.php', '', 'menu-top menu-icon-appearance', 'menu-appearance', 'div' );
@@ -232,7 +232,7 @@

 $_wp_last_utility_menu = 80; // The index of the last top-level menu in the utility menu group

-$menu[99] = array( '', 'read', '', '', 'wp-menu-separator-last' );
+$menu[99] = array( '', 'read', 'separator-last', '', 'wp-menu-separator-last' );

 // Back-compat for old top-levels
 $_wp_real_parent_file['post.php'] = 'edit.php';