CDI 1.1 Interceptor / InterceptorBinding called twice - cdi

Question

I've built a simple ear application consisting of an EJB and a WAR module. I'm using CDI interceptor to intercept the call to JSF actions to do some operation. Everything is working fine except for a strange behaviour that arises when I annotate the action method using the interceptorbiding annotation. To be more precise, here is the code:
This is the interceptor biding class
#Inherited
#Documented
#InterceptorBinding
#Retention(RUNTIME)
#Target({METHOD, TYPE})
public #interface SecurityCheck {
}
This is the interceptor class:
#Interceptor
#SecurityCheck
#Priority(Interceptor.Priority.APPLICATION)
public class SecurityCheckInterceptor implements Serializable {
#Inject
SecurityService secutiyService;
#AroundInvoke
public Object securityIntercept(InvocationContext ic) throws Exception {
String target = // build the fully qualified method name from ic
System.out.println("---- ENTER: ["+target+"]");
Object out = ic.proceed();
System.out.println("---- EXIT: ["+target+"]");
return out;
}
}
And these are the two alternative of usage of the interceptor in my JSF bean class:
// METHOD N. 1
#Named
#ViewScoped
public class IndexController implements Serializable {
...
#Interceptors({SecurityCheckInterceptor.class})
public void doAction() {
System.out.println("indexController.doAction()");
}
}
and
// METHOD N. 2
#Named
#ViewScoped
public class IndexController implements Serializable {
...
#SecurityCheck
public void doAction() {
System.out.println("indexController.doAction()");
}
}
when I use the method N. 1 the output is as follow:
---- ENTER: [it.univaq.we2018.tutor.controller.IndexController.doAction()]
indexController.doAction()
---- EXIT: [it.univaq.we2018.tutor.controller.IndexController.doAction()]
so everything is as expected, but using Method n.2 (which I prefer) the output is as follow:
---- ENTER: [it.univaq.we2018.tutor.controller.IndexController.doAction()]
---- ENTER: [it.univaq.we2018.tutor.controller.IndexController.doAction()]
indexController.doAction()
---- EXIT: [it.univaq.we2018.tutor.controller.IndexController.doAction()]
---- EXIT: [it.univaq.we2018.tutor.controller.IndexController.doAction()]
The interceptor is called twice in a "nested" fashion.
Is this a bug? Have I missed something?
I'm using Java 1.8_172, Payara 5.181, NetBeans 8.2 and JavaEE 7 profile. The application is based on the javaee7 maven archetype. All the annotation are CDI and not the JSF ones (eg. ViewScoped).
Thank you.