java.lang.ClassCastException: javax.faces.component.StateHolderSaver cannot be cast to [Ljava.lang.Object;
	at org.primefaces.component.behavior.ajax.AjaxBehavior.restoreState(AjaxBehavior.java:299)
	at javax.faces.component.UIComponentBase.restoreBehaviors(UIComponentBase.java:2184)
	at javax.faces.component.UIComponentBase.restoreBehaviorsState(UIComponentBase.java:2151)
	at javax.faces.component.UIComponentBase.restoreState(UIComponentBase.java:1571)
	at javax.faces.component.UIOutput.restoreState(UIOutput.java:256)
	at javax.faces.component.UIInput.restoreState(UIInput.java:1404)
	at com.sun.faces.application.view.StateManagementStrategyImpl$2.visit(StateManagementStrategyImpl.java:276)
	at com.sun.faces.component.visit.FullVisitContext.invokeVisitCallback(FullVisitContext.java:151)

... поскипано ...	

	at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
	at ru.vac.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:20)

... поскипано ...

public class CharacterEncodingFilter implements Filter, Serializable {
    private static final long serialVersionUID = -4246457499875267088L;

    @Override
    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws IOException, ServletException {
        req.setCharacterEncoding("UTF-8");
        resp.setCharacterEncoding("UTF-8");
        chain.doFilter(req, resp);
    }

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {}

    @Override
    public void destroy() {}
}