Fix issues with AJAX handlers on dashboard widgets. Replaces #4132

modules/backend/classes/ReportWidgetBase.php

@@ -15,6 +15,14 @@ class ReportWidgetBase extends WidgetBase
     {
         $this->properties = $this->validateProperties($properties);
 
+        /*
+         * Ensure the provided alias (if present) takes effect as the widget configuration is
+         * not passed to the WidgetBase constructor which would normally take care of that
+         */
+        if (!isset($this->alias)) {
+            $this->alias = $properties['alias'] ?? $this->defaultAlias;
+        }
+
         parent::__construct($controller);
     }
 }

modules/backend/widgets/ReportContainer.php

@@ -236,6 +236,9 @@ class ReportContainer extends WidgetBase
         }
         while (array_key_exists($alias, $widgets));
 
+        // Ensure that the widget's alias is correctly set for this request
+        $widget->alias = $alias;
+
         $sortOrder = 0;
         foreach ($widgets as $widgetInfo) {
             $sortOrder = max($sortOrder, $widgetInfo['sortOrder']);