If a ManagedExecutorService's Runnable throws an exception, it should not be eaten (but it's stacktrace should be shown in the console) by default -------------------------------------------------------------------------------------------------------------------------------------------------- Key: WFLY-4086 URL: https://issues.jboss.org/browse/WFLY-4086 Project: WildFly Issue Type: Enhancement Components: EE Affects Versions: 8.1.0.Final Reporter: Geoffrey De Smet Priority: Major To reproduce: {code} @Resource(name = "DefaultManagedExecutorService") ManagedExecutorService executor; public String myRestMethod() { executor.submit(new SolverCallable()); return "Submitted."; } private class SolverCallable implements Runnable { public void run() { throw new IllegalStateException("Tweety bird: Please Sylvester, don't eat me!"); } } {code} Poor tweety bird's plea (nor the stacktrace) doesn't show up in the WildFly console of a vanilla installation. This led me to believe I had no error.