From 60ff3b8e4a30b0f91eed2bfa34a93a9e0648e938 Mon Sep 17 00:00:00 2001
From: donandren <donandren@gmail.com>
Date: Fri, 3 Mar 2017 19:13:02 +0200
Subject: [PATCH] fixed bug in panel controls when they are set with the same
 collection instance

---
 src/Avalonia.Controls/Panel.cs | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/Avalonia.Controls/Panel.cs b/src/Avalonia.Controls/Panel.cs
index 793399841c..3272d3779b 100644
--- a/src/Avalonia.Controls/Panel.cs
+++ b/src/Avalonia.Controls/Panel.cs
@@ -64,9 +64,12 @@ namespace Avalonia.Controls
             {
                 Contract.Requires<ArgumentNullException>(value != null);
 
-                VisualChildren.Clear();
-                _children.Clear();
-                _children.AddRange(value);
+                if (_children != value)
+                {
+                    VisualChildren.Clear();
+                    _children.Clear();
+                    _children.AddRange(value);
+                }
             }
         }