From a3b52b45197e7766117600461f345528ee327ca8 Mon Sep 17 00:00:00 2001
From: Simon Karlen <simi.albi@outlook.com>
Date: Wed, 5 Jan 2022 09:41:34 +0100
Subject: [PATCH] fixed strange yii2 behavior in css class handling

---
 src/BaseHtml.php | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/BaseHtml.php b/src/BaseHtml.php
index c919fb5..1baf6df 100644
--- a/src/BaseHtml.php
+++ b/src/BaseHtml.php
@@ -27,6 +27,13 @@ abstract class BaseHtml extends \yii\helpers\Html
      * @see getId()
      */
     public static $autoIdPrefix = 'i';
+    /**
+     * @var bool whether to removes duplicate class names in tag attribute `class` (fix strange yii2 behavior since 2.0.44)
+     * @see mergeCssClasses()
+     * @see renderTagAttributes()
+     * @since 2.0.3
+     */
+    public static $normalizeClassAttribute = true;
 
 
     /**