diff --git a/src/wp-admin/js/customize-nav-menus.js b/src/wp-admin/js/customize-nav-menus.js
index 8abf97fe2c..e753646b36 100644
--- a/src/wp-admin/js/customize-nav-menus.js
+++ b/src/wp-admin/js/customize-nav-menus.js
@@ -1323,7 +1323,14 @@
 			this.container.find( '.menu-item-handle' ).on( 'click', function( e ) {
 				e.preventDefault();
 				e.stopPropagation();
-				var menuControl = control.getMenuControl();
+				var menuControl = control.getMenuControl(),
+					isDeleteBtn = $( e.target ).is( '.item-delete, .item-delete *' ),
+					isAddNewBtn = $( e.target ).is( '.add-new-menu-item, .add-new-menu-item *' );
+
+				if ( $( 'body' ).hasClass( 'adding-menu-items' ) && ! isDeleteBtn && ! isAddNewBtn ) {
+					api.Menus.availableMenuItemsPanel.close();
+				}
+
 				if ( menuControl.isReordering || menuControl.isSorting ) {
 					return;
 				}
@@ -2214,7 +2221,7 @@
 				}
 			} );
 
-			control.container.find( '.menu-delete' ).on( 'click', function( event ) {
+			control.container.find( '.menu-delete-item' ).on( 'click', function( event ) {
 				event.stopPropagation();
 				event.preventDefault();
 				control.setting.set( false );