Ticket #3633: 3633_3.patch

_source/plugins/contextmenu/plugin.js

@@ -154 +154 @@
                                 this );
                 },
 
+                // Cancel the browser context menu.
                 addDisabledTarget : function( element )
                 {
                         element.on( 'contextmenu', function( event )
                                 {
-                                        // Cancel the browser context menu.
-                                        event.data.preventDefault();
+                                        var target = event.data.getTarget();
+                                        // Allow context menu within source mode. 
+                                        if( !target.equals( this.editor.textarea ) )
+                                                event.data.preventDefault();
                                 } );
                 },