Scaffolding a Folderish leads to no data at runtime (missing results)

1. Create a Folderish document (no need to add fields etc., just a Folderish)
2. In Designer, click the "Configure missing layouts"
3. Hot reload
4. Create such document, add a child or more
5. Back to the view mode => no children displayted

Probable cause: When looking at what was scaffolded at step #2, you can see that the hilt contains only a nuxeo-page-provider, no result layouts, no data-table etc.:

<dom-module id="nuxeo-testfolderish-view-layout">
  <template>
    <style include="nuxeo-styles">
      . . .
    </style>
    <nuxeo-page-provider id="nxProvider" provider="advanced_document_content" page-size="40" aggregations="" enrichers="thumbnail, permissions" params="[[params]]" schemas="dublincore,common,uid,file" headers='{ "X-NXfetch.document": "properties", "X-NXtranslate.directoryEntry": "label" }' fetch-aggregates></nuxeo-page-provider>

  </template>
. . .

Workaround: replace the <nuxeo-page-provider...> line with <nuxeo-document-content document="[[document]]"></nuxeo-document-content>