undo bug fix

kity @ 256dce28

-Subproject commit d4e00b314db4116a92583114bcb67ff9a3c4d48d
+Subproject commit 256dce28fb1e574b18f0dd084f7503cbc25e2a80

src/module/layout.js

@@ -41,9 +41,13 @@ KityMinder.registerModule( "LayoutModule", function () {
 		initStyle: function () {
 			var curStyle = this.getCurrentStyle();
 			this._rc.remove();
+			var transform = this._rc.transform;
 			this._rc = new kity.Group();
 			this._paper.addShape( this._rc );
 
+			this._rc.transform = transform;
+			this._rc._applyTransform();
+
 			var _root = this.getRoot();
 			_root.preTraverse( function ( n ) {
 				n.clearLayout();