From d3a2e54eb3cf3fbdb826ab086506ada51d04a9f6 Mon Sep 17 00:00:00 2001
From: Artur Arseniev <artur.catch@hotmail.it>
Date: Thu, 18 Jun 2020 02:17:09 +0200
Subject: [PATCH] Init component with classes from attributes. Fixes #2836

---
 src/dom_components/model/Component.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/dom_components/model/Component.js b/src/dom_components/model/Component.js
index 6fdc593a5..27d54e0cb 100644
--- a/src/dom_components/model/Component.js
+++ b/src/dom_components/model/Component.js
@@ -552,8 +552,9 @@ const Component = Backbone.Model.extend(Styleable).extend(
 
     initClasses() {
       const event = 'change:classes';
+      const attrCls = this.get('attributes').class || [];
       const toListen = [this, event, this.initClasses];
-      const cls = this.get('classes') || [];
+      const cls = this.get('classes') || attrCls;
       const clsArr = isString(cls) ? cls.split(' ') : cls;
       this.stopListening(...toListen);
       const classes = this.normalizeClasses(clsArr);