Index: src/wp-admin/includes/nav-menu.php
===================================================================
--- src/wp-admin/includes/nav-menu.php	(revision 31836)
+++ src/wp-admin/includes/nav-menu.php	(working copy)
@@ -78,7 +78,14 @@
 		);
 
 		$title = $item->title;
+		$title_class = '';
 
+		/* translators: menu item has no label */
+		if ( empty( $title ) ) {
+			$title = _x( '(no label)', 'missing menu item navigation label' );
+			$title_class = 'no-title';
+		}
+
 		if ( ! empty( $item->_invalid ) ) {
 			$classes[] = 'menu-item-invalid';
 			/* translators: %s: title of menu item which is invalid */
@@ -92,14 +99,15 @@
 		$title = ( ! isset( $item->label ) || '' == $item->label ) ? $title : $item->label;
 
 		$submenu_text = '';
-		if ( 0 == $depth )
+		if ( 0 == $depth ) {
 			$submenu_text = 'style="display: none;"';
+		}
 
 		?>
 		<li id="menu-item-<?php echo $item_id; ?>" class="<?php echo implode(' ', $classes ); ?>">
 			<dl class="menu-item-bar">
 				<dt class="menu-item-handle">
-					<span class="item-title"><span class="menu-item-title"><?php echo esc_html( $title ); ?></span> <span class="is-submenu" <?php echo $submenu_text; ?>><?php _e( 'sub item' ); ?></span></span>
+					<span class="item-title"><span class="menu-item-title <?php echo $title_class; ?>"><?php echo esc_html( $title ); ?></span> <span class="is-submenu" <?php echo $submenu_text; ?>><?php _e( 'sub item' ); ?></span></span>
 					<span class="item-controls">
 						<span class="item-type"><?php echo esc_html( $item->type_label ); ?></span>
 						<span class="item-order hide-if-js">
@@ -1271,7 +1279,7 @@
 		foreach( (array) $_POST['menu-item-db-id'] as $_key => $k ) {
 
 			// Menu item title can't be blank
-			if ( ! isset( $_POST['menu-item-title'][ $_key ] ) || '' == $_POST['menu-item-title'][ $_key ] )
+			if ( ! isset( $_POST['menu-item-title'][ $_key ] ) )
 				continue;
 
 			$args = array();