Clients that are connected that experience a lease timeout are not notified that they no longer have a connection on the server. The behavior is that clients think that they are alive, while they will no longer get any messages. Also something of note, the Server side pinger has been disabled for JBM.
Note: this is an issue that can either be fixed on the remoting side or the JBM side. Discussing this with Clebert, it may be prudent to fix it on both sides. I've opened this jira to facilitate the communication about where the logic should go. Please refer to the linked Remoting Jira
JBREM-888 that was opened for this same topic.