Merge branch 'master' of https://github.com/yiisoft/yii2

framework/base/Component.php

@@ -90,6 +90,7 @@ class Component extends Object
 			// as behavior: attach behavior
 			$name = trim(substr($name, 3));
 			$this->attachBehavior($name, $value instanceof Behavior ? $value : Yii::createObject($value));
+			return;
 		} else {
 			// behavior property
 			$this->ensureBehaviors();