Fix property value sliders usage in BT editor

Source/Editor/Surface/Archetypes/BehaviorTree.cs

@@ -27,6 +27,7 @@ namespace FlaxEditor.Surface.Archetypes
             private ScriptType _type;
             private InputBox _input;
             private OutputBox _output;
+            internal bool _isValueEditing;
 
             public BehaviorTreeNode Instance;
 
@@ -172,6 +173,13 @@ namespace FlaxEditor.Surface.Archetypes
             {
                 base.OnValuesChanged();
 
+                if (_isValueEditing)
+                {
+                    // Skip updating instance when it's being edited by user via UI
+                    UpdateTitle();
+                    return; 
+                }
+
                 try
                 {
                     if (Instance != null)

Source/Editor/Windows/Assets/BehaviorTreeWindow.cs

@@ -61,7 +61,7 @@ namespace FlaxEditor.Windows.Assets
             _undo = new Undo();
             _undo.UndoDone += OnUndoRedo;
             _undo.RedoDone += OnUndoRedo;
-            _undo.ActionDone += OnUndoRedo;
+            _undo.ActionDone += OnUndoAction;
 
             // Split Panels
             _split1 = new SplitPanel(Orientation.Horizontal, ScrollBars.None, ScrollBars.None)
@@ -120,6 +120,12 @@ namespace FlaxEditor.Windows.Assets
             _nodePropertiesEditor.BuildLayoutOnUpdate();
         }
 
+        private void OnUndoAction(IUndoAction action)
+        {
+            MarkAsEdited();
+            UpdateToolstrip();
+        }
+
         private void OnNodeSelectionChanged()
         {
             // Select node instances to view/edit
@@ -149,7 +155,9 @@ namespace FlaxEditor.Windows.Assets
                     {
                         if (nodes[j] is Surface.Archetypes.BehaviorTree.Node node && node.Instance == instance)
                         {
+                            node._isValueEditing = true;
                             node.SetValue(1, FlaxEngine.Json.JsonSerializer.SaveToBytes(instance));
+                            node._isValueEditing = false;
                             break;
                         }
                     }