It's not really resolved. I've worked around the problem by switching from single article layout to category list layout. In that view, the masthead is displayed correctly, as are article title and edit/print/email icon. However, in single article layout the preview picture and the article title are used in masthead format, but the proper title and edit/print/email icon are not shown. The articles linked to from the https://infinitymind.consulting/extensions (different ticket) this causes serious problems. With one article, no masthead module is displayed, with the other it is, using the intropicture. On both pages, the article title is suppressed, so I had to reenter it in the maintext area of the article.