Ticket #4797: 4797.patch

_source/plugins/dialogui/plugin.js

@@ -87 +87 @@
                                 {
                                         dialog.on( 'load', function()
                                                 {
-                                                        this.getInputElement().on( 'change', function(){ this.fire( 'change', { value : this.getValue() } ); }, this );
+                                                        this.getInputElement().on( 'change', function(){ if ( this.getElement() ) this.fire( 'change', { value : this.getValue() } ); }, this );
                                                 }, this );
                                         this._.domOnChangeRegistered = true;
                                 }