p:messages on a redirected page not shown

[AndrewChurchill1970]

Hello.

I have a problem with showing messages on a redirected page with jakarta Faces 4.0 and Primefaces 14.0.10
Have you any idea what’s wrong?

Code =>

 
FacesContext fc = FacesContext.getCurrentInstance();
fc.addMessage(null,new FacesMessage(FacesMessage.SEVERITY_ERROR, "This is my message", "my title"));
fc.getExternalContext().getFlash().setKeepMessages(true);
fc.getExternalContext().getFlash().setRedirect(true);
fc.getExternalContext().redirect("error.xhtml");

error.xhtml has that components =>

       <p:messages>
             <p:autoUpdate />
       </p:messages>
       <p:growl>
             <p:autoUpdate />
       </p:growl>

MessagesRenderer Method encodeMarkup() is called but after List messages = collectFacesMessages(uiMessages, context); the messages is null;
Where the messages got lost till to this call?