From 135bc174ddbd067eaaa6b0b83ef8b3ac9bf0c1ba Mon Sep 17 00:00:00 2001
From: mertsincan <sincan.mert@gmail.com>
Date: Fri, 1 Jun 2018 12:00:01 +0300
Subject: [PATCH] Fixed #429

---
 src/components/tree/Tree.js | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/components/tree/Tree.js b/src/components/tree/Tree.js
index 51cedbad77..d67c6ccb00 100644
--- a/src/components/tree/Tree.js
+++ b/src/components/tree/Tree.js
@@ -198,9 +198,10 @@ export class TreeNode extends Component {
     }
 
     static getDerivedStateFromProps(nextProps, prevState) {
-        if(prevState.expanded !== nextProps.node.expanded) {
+        let nextNode = nextProps.node;
+        if(nextNode.hasOwnProperty("expanded") && prevState.expanded !== nextNode.expanded) {
             return {
-                expanded: nextProps.node.expanded
+                expanded: nextNode.expanded
             };
         }
         return null;