We store session data in a database. When our Application.cfc includes the line this.sessioncluster=true the standard items are written for a new session (timecreated, sessionid, lastvisit) but session variables created by our application are not written to the database.
If we remove this.sessioncluster=true or change the session storage setting to "memory" the problem goes away. The same applications worked fine on version 5.0.0
I noticed that with this.sessioncluster=true the session data seems to be overwritten... the timecreated data is updated for each page request and always matches the lastvisit. When I remove this.sessioncluster=true this behaviour goes away... the timecreated stays the same while the lastvisit is updated and other data is written.