Added performing layout when deleting actors and scrolling to duplicated/ pasted actors when action is performed.

Source/Editor/Modules/SceneEditingModule.cs

@@ -450,7 +450,11 @@ namespace FlaxEditor.Modules
             SelectionDeleteEnd?.Invoke();
 
             if (isSceneTreeFocus)
+            {
                 Editor.Windows.SceneWin.Focus();
+                Editor.Windows.SceneWin.PerformLayout();
+                Editor.Windows.SceneWin.PerformLayout();
+            }
         }
 
         /// <summary>
@@ -514,6 +518,9 @@ namespace FlaxEditor.Modules
                 Undo.AddAction(new MultiUndoAction(pasteAction, selectAction));
                 OnSelectionChanged();
             }
+            
+            // Scroll to new selected node while pasting
+            Editor.Windows.SceneWin.ScrollToSelectedNode();
         }
 
         /// <summary>
@@ -611,6 +618,9 @@ namespace FlaxEditor.Modules
                 Undo.AddAction(new MultiUndoAction(undoActions));
                 OnSelectionChanged();
             }
+            
+            // Scroll to new selected node while duplicating
+            Editor.Windows.SceneWin.ScrollToSelectedNode();
         }
 
         /// <summary>

Source/Editor/Windows/SceneTreeWindow.cs

@@ -209,6 +209,17 @@ namespace FlaxEditor.Windows
             if (_sceneTreePanel.HScrollBar != null)
                 _sceneTreePanel.HScrollBar.ThumbEnabled = enabled;
         }
+        
+        /// <summary>
+        /// Scroll to selected node in the scene tree
+        /// </summary>
+        public void ScrollToSelectedNode()
+        {
+            // Scroll to node 
+            var nodeSelection = _tree.Selection;
+            var scrollPosition = nodeSelection[nodeSelection.Count - 1];
+            _sceneTreePanel.ScrollViewTo(scrollPosition);
+        }
 
         private void OnSearchBoxTextChanged()
         {