[Effen] We need to update the layout manager in _syncNode() also,

sky/framework/fn.dart

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 library fn;
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:sky' as sky;
 import 'reflect.dart' as reflect;
@@ skipping 589 matching lines @@
     style: style,
     inlineStyle: inlineStyle
   );
 
   sky.Node _createNode() {
     var result = super._createNode();
     result.setLayoutManager(() => layout(_root));
     return result;
   }
 
+  // If we ever reuse sky nodes for different classes, then we should 
+  // call _root.setLayoutManager(null) during _remove() here.
+
   void _syncNode(SkyNodeWrapper old) {
     super._syncNode(old);
+    _root.setLayoutManager(() => layout(_root));
     _root.setNeedsLayout();
   }
 
   void layout(sky.Element skyNode);
   // set skyNode.width (e.g., set it to skyNode.parentNode.width)
   // for each skyNode.getChildNodes()[i]:
   //   call .layout()
   //   set .x, .y
   //   set .width if you want to force a width
   //   set .height if you want to force a height
@@ skipping 299 matching lines @@
 
 abstract class App extends Component {
   sky.Node _host;
 
   App() : super(stateful: true) {
     _host = sky.document.createElement('div');
     sky.document.appendChild(_host);
     _scheduleComponentForRender(this);
   }
 }