Glitch in 9.2.2 The case Element

All,

I think there is a glitch in the description of the case element: "This
element encloses markup to be conditionally rendered. The content
elements (e.g. form controls, groups, switches, repeats and host
language elements) within a non-selected case behave as if they were in
a non-relevant group (see 9.1.1 The group Element). Similarly, content
elements in a case that becomes selected behave as if they were in a
group that has become relevant. The attribute selected determines the
initial selected state."

I always thought a non-selected case has to be hidden in - well - any
case. But hiding a case is here defined in terms of group non-relevance,
which is not strictly defined to be hidden. A glitch or intent?

Regards,
Uli.
-- 
Ulrich Nicolas Lissé