EJB business methods invoked by @Timeout (same bean) not intercepted

EJB business methods invoked from @Timeout in the same bean are not intercepted.
Also, @Asynchronous methods invoked from @Timeout are not executed asynchronously.
All of this happens only to methods belongin to the same bean as @Timeout. If the @Timeout method invokes business methods belonging to a different bean everything is Ok.