diff --git a/extensions/yii/debug/Module.php b/extensions/yii/debug/Module.php
index fb0ac80..06f2b76 100644
--- a/extensions/yii/debug/Module.php
+++ b/extensions/yii/debug/Module.php
@@ -57,7 +57,7 @@ class Module extends \yii\base\Module
 		$this->dataPath = Yii::getAlias($this->dataPath);
 		$this->logTarget = Yii::$app->getLog()->targets['debug'] = new LogTarget($this);
 		// do not initialize view component before application is ready (needed when debug in preload)
-		Yii::$app->on(Application::EVENT_BEFORE_ACTION, function() {
+		Yii::$app->on(Application::EVENT_BEFORE_REQUEST, function() {
 			Yii::$app->getView()->on(View::EVENT_END_BODY, [$this, 'renderToolbar']);
 		});
 
diff --git a/framework/CHANGELOG.md b/framework/CHANGELOG.md
index 617495c..447627b 100644
--- a/framework/CHANGELOG.md
+++ b/framework/CHANGELOG.md
@@ -23,6 +23,7 @@ Yii Framework 2 Change Log
 - Bug #1733: Incorrect code about `$_modelClasses` in `DbFixtureManager` (qiangxue)
 - Bug #1798: Fixed label attributes for array fields (zhuravljov)
 - Bug #1800: Better check for `$_SERVER['HTTPS']` in `yii\web\Request::getIsSecureConnection()` (ginus, samdark)
+- Bug #1827: Debugger toolbar is loaded twice if an action is calling `run()` to execute another action (qiangxue)
 - Bug: Fixed `Call to a member function registerAssetFiles() on a non-object` in case of wrong `sourcePath` for an asset bundle (samdark)
 - Bug: Fixed incorrect event name for `yii\jui\Spinner` (samdark)
 - Bug: Json::encode() did not handle objects that implement JsonSerializable interface correctly (cebe)