JAX-RS validation doesn't work at all

STEP: Create dynamic web project with JAX-RS support STEP: Create a REST web service: public class A { @GET @Path( "/{id}" ) public void method(@PathParam( "myid" ) int id) { } } ASSERT: there is validation error ("myid" should be "id" ) FAIL: there is no validation error at all Error is thrown when saving the file: org.jboss.tools.common.validation.JBTValidationException: [Ljava.lang. Object ; cannot be cast to [Lorg.eclipse.core.resources.IResource; at org.jboss.tools.common.validation.ValidatorManager.validateInJob(ValidatorManager.java:101) at org.eclipse.wst.validation.internal.operations.ValidatorJob.run(ValidatorJob.java:78) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54) Caused by: java.lang.ClassCastException: [Ljava.lang. Object ; cannot be cast to [Lorg.eclipse.core.resources.IResource; at org.jboss.tools.ws.jaxrs.core.internal.metamodel.validation.JaxrsMetamodelValidator.validate(JaxrsMetamodelValidator.java:106) at org.jboss.tools.common.validation.ValidatorManager.validate(ValidatorManager.java:117) at org.jboss.tools.common.validation.ValidatorManager.validateInJob(ValidatorManager.java:81) ... 2 more