From 4f127761a0bbba3edfcbc54386107d8f4c4ddd35 Mon Sep 17 00:00:00 2001
From: Wojciech Figat <wojtek@figat.pl>
Date: Thu, 9 Dec 2021 17:07:39 +0100
Subject: [PATCH] Fix error on scene tree drag&drop handling change

---
 Source/Editor/Windows/SceneTreeWindow.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Source/Editor/Windows/SceneTreeWindow.cs b/Source/Editor/Windows/SceneTreeWindow.cs
index 601f03d53..a750a076b 100644
--- a/Source/Editor/Windows/SceneTreeWindow.cs
+++ b/Source/Editor/Windows/SceneTreeWindow.cs
@@ -443,7 +443,7 @@ namespace FlaxEditor.Windows
         public override DragDropEffect OnDragMove(ref Vector2 location, DragData data)
         {
             var result = base.OnDragMove(ref location, data);
-            if (result == DragDropEffect.None && Editor.StateMachine.CurrentState.CanEditScene)
+            if (result == DragDropEffect.None && Editor.StateMachine.CurrentState.CanEditScene && _dragHandlers != null)
             {
                 result = _dragHandlers.Effect;
             }