If a Console tab tries to inform the user that a particular tab lacks support (through ConsoleTab.validateDependencies()) it fails to actually present the message (using ConsoleTab.showMessage(...)) .

Instead the message is "shown" when for example the connection is broken. Instead of the ordinary message "Connection Lost" the message "2 errors detected" is shown without any way to actually see the content of the individual messages.

Can be simulated by adding an explicit showMessage invocation in a tabs validateDependencies and then tear down the connection by shutting down the monitored JVM. This is true for JMC 6.0.0 and probable for JMC 5.5 but not tested there yet.