Ticket #33393: tinymce-wp-link-plugin.js.patch

wp-includes/js/tinymce/plugins/wplink/plugin.js

@@ -136 +136 @@
                 } );
 
                 editor.on( 'preinit', function() {
-                        toolbar = editor.wp._createToolbar( [
-                                'wp_link_preview',
-                                'wp_link_edit',
-                                'wp_link_remove'
-                        ], true );
+                        // editor may not have wp object if tinymce wordpress plugin isn't loaded.
+                        if ( editor.wp && editor.wp._createToolbar ) {
+                                toolbar = editor.wp._createToolbar( [
+                                        'wp_link_preview',
+                                        'wp_link_edit',
+                                        'wp_link_remove'
+                                ], true );
+                        }
                 } );
         } );
 } )( window.tinymce );