Section 24.1.2 includes the following text:

When Running in Java EE, the container must extend the rules defined in Observer method invocation context and must also ensure that

All kinds of observers are called in the same client security context as the invocation of Event.fire() or Event.fireAsync() or BeanManager.fireEvent().

The break after "that" in the first line seems weird, its not clear if its supposed to continue into the second line, or if the sentence is intended to continue.