app/assets/javascripts/semantic-ui/modules/behavior/form.js in semantic-ui-rails-0.12.2 vs app/assets/javascripts/semantic-ui/modules/behavior/form.js in semantic-ui-rails-0.12.4

@@ -319,10 +319,10 @@
               module.debug('Form has no validation errors, submitting');
               $module
                 .removeClass(className.error)
                 .addClass(className.success)
               ;
-              $.proxy(settings.onSuccess, this)(event);
+              return $.proxy(settings.onSuccess, this)(event);
             }
             else {
               module.debug('Form has errors');
               $module.addClass(className.error);
               if(!settings.inline) {