Just jotting this down - so we are aware of it. This effects all versions and not just Dev. When jingles browser is left open you can return a day later and the window is still open yet all the UI is unresponsive e.g can not click log out or any links on the page. Have to force a hard browser refresh. In addition I have noticed that I can return to a fico web instance 2 weeks after I first logged in in a new browser window and I am automatically authenticated WITHOUT having to login - guess the cookie / token can persist forever. This is sub-optimal from a security perspective imho.