Button actionListener with an actionEvent.queue() issue

The other day, I faced an issue with the programmatic taskflow navigation. At first, it seemed to be a simple task. The purpose was to click a button on a page and navigate to the next step in the bounded taskflow.

The environment is MS Windows 10, JDeveloper is 12.2.1 (Build JDEVADF_MAIN_GENERIC_151011.0031.S).

The code for the button is:
af:button text="button 1" id="b1" action="save" actionListener="#{viewScope.bean.validate}"


The code for the actionListener is:
public void validate(ActionEvent actionEvent) {
        RichButton saveButton = (RichButton) actionEvent.getComponent();
        ActionEvent action = new ActionEvent(saveButton);
        System.out.println("The listener has fired ########### ");
        action.queue();
}

When the button is clicked, the actionListener fires continuously, so the user sees that the application is hang. The Oracle Support has opened a bug 23325363 : TASKFLOW NAVIGATION USING ACTIONLISTENER IS FIRED CONTINUOUSLY, which is being worked on a priority.

Update, which works OK, but the question still remains. "save" is the name of action.

public void validate(ActionEvent actionEvent) {
//RichButton saveButton = (RichButton) actionEvent.getComponent();
//ActionEvent action = new ActionEvent(saveButton);
//action.queue();

NavigationHandler nvHndlr =
FacesContext.getCurrentInstance().getApplication().getNavigationHandler();
nvHndlr.handleNavigation(FacesContext.getCurrentInstance(),
null,"save");
}