Elytron SSO does not track sessions of multiple applications

Issue

• We've configured an Elytron realm on EAP 7 with SSO. We see that upon logout, the session is only invalidated for the application originally accessed during login. Also, if the session of that application expires, the SSO is lost and the client must login again in all other applications.
• When using Elytron SSO, all participating sessions of an SSO entry are not invalidated upon manual invalidation of one participating session as with Undertow SSO.