I recently updated the names of categories in the template, and tried purging the cache of the flow topic (via ?action=purge) to update the categories. This did absolutely nothing, so I tried removing the template and adding it back in, and now it uses a bizarre mix of the old and new category names:
All approved Wikipedia article requests
Approved Wikipedia article requests
WikiProject United States requested articles
"Approved Wikipedia article requests" and "WikiProject United States requested articles" are artifacts of an older version of the template. "All approved Wikipedia article requests" is rightfully displayed, but "WikiProject United States approved article requests" is oddly missing.
Also happens when templates are not involved. See https://en.wikipedia.org/w/index.php?title=Topic:Selbmxmvhx79462g&topic_showPostId=selchds8is4qutoz#flow-post-selchds8is4qutoz .