Fix materials parameters display issues after editing

Source/Editor/Windows/Assets/AnimationGraphWindow.cs

@@ -186,7 +186,6 @@ namespace FlaxEditor.Windows.Assets
 
             // Asset properties proxy
             _properties = new PropertiesProxy();
-            _propertiesEditor.Select(_properties);
 
             // Preview properties editor
             _previewTab = new Tab("Preview");
@@ -322,22 +321,17 @@ namespace FlaxEditor.Windows.Assets
             {
                 if (value == null)
                 {
-                    // Error
                     Editor.LogError("Failed to save animation graph surface");
                     return;
                 }
-
-                // Save data to the temporary asset
                 if (_asset.SaveSurface(value))
                 {
-                    // Error
                     _surface.MarkAsEdited();
                     Editor.LogError("Failed to save animation graph surface data");
                     return;
                 }
                 _asset.Reload();
-
-                // Reset any root motion
+                _asset.WaitForLoaded();
                 _preview.PreviewActor.ResetLocalTransform();
                 _previewTab.Presenter.BuildLayoutOnUpdate();
             }
@@ -376,6 +370,14 @@ namespace FlaxEditor.Windows.Assets
             return false;
         }
 
+        /// <inheritdoc />
+        protected override void OnSurfaceEditingStart()
+        {
+            _propertiesEditor.Select(_properties);
+
+            base.OnSurfaceEditingStart();
+        }
+
         /// <inheritdoc />
         protected override void PerformLayoutBeforeChildren()
         {