@ska Could it be that anything in state/prq-unqueued or process-the-thing threw a java.lang.Error or any other class that isn't in the inheritance chain of java.lang.Exception? That would also explain the observed behavior.

@dergutemoritz Good idea. I am actually catching Exception and not Throwable. But I also install a Thread$UncaughtExceptionHandler that would log. My understanding is, that there should be no way of falling through this, but of course I may be wrong.

@ska Indeed, you should get a log that way AFAICT