@EJB injection of EJBs from shared deployment sometimes fail on NPE

11:53:32,572 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-8) MSC00001: Failed to start service jboss.deployment.subunit."jaxws-jbws2634.ear"."jaxws-jbws2634-pojo.war".INSTALL: org.jboss.msc.service.StartException in service jboss.deployment.subunit."jaxws-jbws2634.ear"."jaxws-jbws2634-pojo.war".INSTALL: Failed to process phase INSTALL of subdeployment "jaxws-jbws2634-pojo.war" of deployment "jaxws-jbws2634.ear"
at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:121) [jboss-as-server-7.1.0.CR1-SNAPSHOT.jar:]
at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1824) [jboss-msc-1.0.1.GA.jar:]
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1759) [jboss-msc-1.0.1.GA.jar:]
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [:1.6.0_29]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [:1.6.0_29]
at java.lang.Thread.run(Thread.java:662) [:1.6.0_29]
Caused by: java.lang.IllegalArgumentException: name is null
at org.jboss.msc.service.ServiceBuilderImpl.doAddDependency(ServiceBuilderImpl.java:203) [jboss-msc-1.0.1.GA.jar:]
at org.jboss.msc.service.ServiceBuilderImpl.addDependency(ServiceBuilderImpl.java:197) [jboss-msc-1.0.1.GA.jar:]
at org.jboss.msc.service.ServiceBuilderImpl.addDependency(ServiceBuilderImpl.java:191) [jboss-msc-1.0.1.GA.jar:]
at org.jboss.as.ejb3.deployment.processors.EjbInjectionSource.getResourceValue(EjbInjectionSource.java:88)
at org.jboss.as.ee.component.deployers.ModuleJndiBindingProcessor.addJndiBinding(ModuleJndiBindingProcessor.java:213)
at org.jboss.as.ee.component.deployers.ModuleJndiBindingProcessor$1.handle(ModuleJndiBindingProcessor.java:180)
at org.jboss.as.ee.component.ClassDescriptionTraversal.run(ClassDescriptionTraversal.java:54)
at org.jboss.as.ee.component.deployers.ModuleJndiBindingProcessor.processClassConfigurations(ModuleJndiBindingProcessor.java:148)
at org.jboss.as.ee.component.deployers.ModuleJndiBindingProcessor.deploy(ModuleJndiBindingProcessor.java:141)
at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:115) [jboss-as-server-7.1.0.CR1-SNAPSHOT.jar:]
... 5 more