If I may add, the best thing you can do is to first find out why the application is failing. If you suspect that cookie persistence is the reason, then you need to look at the traffic between the client and app, and the client and the next open tab (help or PDF print) and see if the persistence cookie changes and/or goes away. I suspect you can still fix this method if it is the problem. Otherwise, if JSESSIONID is the route you want to take, you have to ensure again that the JSESSIONID is in EVERY request to the VIP, both for the app and the next open browser tab.