Restored faulty left-click logic for now.

OpenRA.Game/Input/InputHandler.cs

@@ -49,4 +49,25 @@ namespace OpenRA
 			Sync.CheckSyncUnchanged(world, () => Ui.HandleInput(input));
 		}
 	}
+
+	public class MouseButtonPreference
+	{
+
+		public MouseButton Action
+		{
+			get
+			{
+				return Game.Settings.Game.UseClassicMouseStyle ? MouseButton.Left : MouseButton.Right;
+			}
+		}
+
+
+		public MouseButton Cancel
+		{
+			get
+			{
+				return Game.Settings.Game.UseClassicMouseStyle ? MouseButton.Right : MouseButton.Left;
+			}
+		}
+	}
 }