Topic on Project talk:Sandbox/Structured Discussions test

This is a summary of the added topic

See discussion at Topic:S9ftya9qaez67kjo

If you visit https://www.mediawiki.org/wiki/Talk:Sandbox?action=new-topic it shows just the new-topic form on an otherwise empty Flow board.

It works, but after successfully adding a new topic there's no indication of success, you just see a blank form to add another topic.