Random deploy error with @Startup @Singleton EJB ------------------------------------------------ Key: WFLY-9443 URL: https://issues.jboss.org/browse/WFLY-9443 Project: WildFly Issue Type: Bug Components: CDI / Weld, Class Loading, EJB Affects Versions: 11.0.0.CR1 Environment: Wildfly 11.0CR1 + Vaadin 8.1.4 Tested on Debian 9.1 and Windows 10 Reporter: Juan Martin Runge Assignee: Martin Kouba Labels: regression Attachments: error.log, success.log, wftest-ear-0.1.0.ear.tar.gz, wftest.tar.gz Simple EAR project with an EJB Module and a WAR Module. War uses Vaadin (think is not relevant but mention it anyway). On the EJB Module I have a @Singleton @Startup bean which has injected a@LocalBean @Stateless bean via @Inject annotation (tested with @EJB annotation with same results). The UI on the WAR side also calls this @LocalBean @Stateless bean. Randomly, when I deploy, redeploy or restart the server, the EAR refuses to deploy do java.lang.IllegalStateException because it cannot inject the @Stateless bean inside the @Startup bean. Attached sample app, project, log with error and log with success. If you check the success log, you will see the @Startup @Singleton bean gets instanciated twice.. Quite strange. Also, this didnt happened with Wildfly 9 (same app deployed perfectly)