Merge remote-tracking branch 'origin/master' into 1.6

# Conflicts:
#	Source/Editor/CustomEditors/CustomEditorsUtil.cs
#	Source/Engine/Networking/NetworkReplicator.cpp
#	Source/Engine/Scripting/ManagedCLR/MUtils.cpp
#	Source/Tools/Flax.Build/Bindings/BindingsGenerator.Cpp.cs

Source/Editor/GUI/ContextMenu/ContextMenuBase.cs

@@ -110,6 +110,25 @@ namespace FlaxEditor.GUI.ContextMenu
             _isSubMenu = true;
         }
 
+        /// <summary>
+        /// Shows the empty menu popup o na screen.
+        /// </summary>
+        /// <param name="control">The target control.</param>
+        /// <param name="area">The target control area to cover.</param>
+        /// <returns>Created popup.</returns>
+        public static ContextMenuBase ShowEmptyMenu(Control control, Rectangle area)
+        {
+            // Calculate the control size in the window space to handle scaled controls
+            var upperLeft = control.PointToWindow(area.UpperLeft);
+            var bottomRight = control.PointToWindow(area.BottomRight);
+            var size = bottomRight - upperLeft;
+
+            var popup = new ContextMenuBase();
+            popup.Size = size;
+            popup.Show(control, area.Location + new Float2(0, (size.Y - popup.Height) * 0.5f));
+            return popup;
+        }
+
         /// <summary>
         /// Show context menu over given control.
         /// </summary>