Please clarify group role

[prlbr]

The group role is defined as:

A set of user interface objects which are not intended to be included in a page summary or table of contents by assistive technologies.

Should it say “is” instead of “are”? I think that it is supposed to mean that the set of objects is not intended to be included in a page summary as a whole, but objects inside that group are able to be included in a summary.

Let’s look at an HTML example:

<div role="group">
  <h1>The Example</h1>
  <p>by prlbr, 26 June 2018</p>
</div>

The <h1> is intended to be included in a summary or ToC. It’s just that role="group" does not cause another entry in the summary or ToC for the <div>, or am I mistaken?

Apart from the choice between “are” and “is”, a clarifying sentence would be helpful.

[jnurthen]

Looks to be resolved in latest editors draft.