CDI 1.0 spec states: "When an enabled bean, as defined in Section 5.1.2, Enabled and disabled beans, specializes a second bean, we can be certain that the second bean is never instantiated or called by the container. Even if the second bean defines a producer or observer method, the method will never be called."

Weld fulfills outdated spec - probably 1.0 Public Review Draft. Also TCK test (ProducerMethodDefinitionTest) does.