RSS Error Messages

The resources/templates/component/rss/bulleted_list/en.html template contains a couple of error messages to be used when the feed can't be displayed:

 <p
   petal:condition="true:self/is_5xx; true:self/user; true:self/user/is_editor"
 >
   <strong>
     There is an RSS component which should go there, but it will not be displayed
     because the RSS feed hasn't been fetched yet.
   </strong>
 </p>
 <p
   petal:condition="true:self/is_4xx; true:self/user; true:self/user/is_editor"
 >
   <strong>
     There is an RSS component which should go there, but it will not be displayed
     because the RSS feed which was specified was not found.
   </strong>
 </p>

But these never appear…