[keycloak-user] Java EE server compatibility and JSR-375

Is it possible to implement JSR-375 using Keycloak? Will this allow you to use Keycloak on any Java EE server without the Spring adapter and any of the server specific keycloak adapters? Are there any plans to do something with Keycloak and JSR-375? The Keycloak documentation gives a warning about the Java Servlet Filter Adapter. It states that: "Backchannel logout works a bit differently than the standard adapters. Instead of invalidating the HTTP session it marks the session id as logged out." What are the implications of this? Will something not work properly? Will the web application still think the user is logged in? Or is the http session not cleaned up from memory?