Hello,

We tried to upgrade to 2.3.1 with hope and immediately the main component of our system - async tree was broken.

It's possible to check it even here:
http://www.sencha.com/examples-2/#asynctree

We have a suspicion that it's due to

Code:
moveFocus(view.getContainer(node));
in TreePanel.onRemove(...)

Finally, exception is


com.google.gwt.core.client.JavaScriptException: (TypeError) @com.google.gwt.core.client.impl.Impl::apply(Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object([JavaScript object(903), JavaScript object(902), JavaScript object(2078)]): Object [object global] has no method 'appendChild'


Method 'appendChild' invoked in TreePanelView.getContainer(...)