Clustering failed with AnnotateDataBinder

The AnnotateDataBinder class is not implementing Serializable. Thus, in a clustering environment, server will throw exception and failed to synchronize the session due to AnnotateDataBinder is not serializable.

To re-product the problem, just created a clustered environment and have a simple page that will init and use AnnotateDataBinder. I have used the following:

<?init class="org.zkoss.zkplus.databind.AnnotateDataBinderInit"?>