2590402 - Portal Fiori and Top Level Navigation are empty due to missing JSESSIONID cookie

• When accessing the main page of the Portal application using the Fiori Framework Page (FFP), no tiles are shown;
• When accessing the Portal application using AJAX Framework Page (AFP), no applications are shown in the Top Level Navigation (TLN);
• The server is configured to issue JSESSIONID cookies with the path attribute set;
• An http trace of the scenario may also show an HTTP 500 error;
• The defaultTrace may contain the following errors:
  
  Cannot process an HTTP request to servlet [NavigationServlet] in [AFPServlet] web application.
  [EXCEPTION]
  java.lang.NullPointerException: while trying to invoke the method com.sap.portal.navigation.ws.NavigationTree.getRootNodes() of a null object loaded from local variable 'navigationTree'
  Cannot process an HTTP request to servlet [NavigationServlet] in [AFPServlet] web application.
  For more details on the problem please check traces searching by logId: C000xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
  500 Internal Server Error is returned for HTTP request [https://portal.com/AFPServlet/NavigationServlet]:
    component [NavigationServlet],
    web module [AFPServlet],
    application [sap.com/com.sap.portal.navigation.afp.AFPEar],
    DC name [sap.com/com.sap.portal.navigation.afp.AFPEar],
    CSN component[EP-PIN-NAV],
    problem categorization [com.sap.ASJ.web.000137],
    internal categorization [-707968228].

• SAP NetWeaver Application Server Java
• EP Release Independent
• SAP NetWeaver

session_cookie servlet_jsp, Ajax framework page, HTTP 500 error, local variable 'navigationTree', WebApplicationException log ID is, Application error occurred during the request processing, masthead, blank , KBA , EP-PIN-NAV , Navigation , BC-JAS-WEB , Web Container, HTTP, JavaMail, Servlets , Problem