JavaEE agent logged the error "Original Subject has already been retrieved - despite this error, data collection will continue normally" (4242548)

JavaEE agent logged the below message when monitoring WebSphere with a Domain Manager:
ERROR   [Execute Queue: Event Handler Thread] com.quest.pas.agent.plugin.collector.websphere.WebSphereSecurityHelper - An unexpected error occurred which may cause undesired behavior. You may want to contact customer support if you see this error again: Original Subject has already been retrieved - despite this error, data collection will continue normally
java.lang.Throwable: -- synthetic stacktrace --
    at com.quest.pas.agent.plugin.collector.websphere.WebSphereSecurityHelper.grabOriginalSubject(WebSphereSecurityHelper.java:76)
    at com.quest.pas.agent.plugin.WebSphereCellIdPlugin.prepareToRecord(WebSphereCellIdPlugin.java:66)
    at com.quest.pas.agent.plugin.periodic.AbstractMetricsCollectorLoader.prepareToRecord(AbstractMetricsCollectorLoader.java:115)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:60)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
    at java.lang.reflect.Method.invoke(Method.java:611)
    at com.quest.common.util.ListenerManager$Handler.invoke(ListenerManager.java:199)
    at $Proxy1.prepareToRecord(Unknown Source)
    at com.quest.pas.agent.recording.RecordingNotificationManager.notifyPrepareToRecord(RecordingNotificationManager.java:58)
    at com.quest.pas.agent.recording.AgentRecordingManager.prepareToRecord(AgentRecordingManager.java:267)
    at com.quest.pas.agent.nexus.NexusProxy$5.run(NexusProxy.java:222)
    at com.quest.pas.common.thread.ExecuteQueue$TaskExecutor.run(ExecuteQueue.java:228)
    at java.lang.Thread.run(Thread.java:736)