When a bot creates a Flow board, a flowinfo API query claims that Flow is not enabled on the resulting page.
See: https://test.wikipedia.org/w/api.php?action=query&prop=flowinfo&titles=Talk:Sandbox|Wikipedia_talk:Co-op/Fhocutt_(WMF)|Wikipedia_talk:Co-op/Flowtest2 . The first two pages are categorized correctly; the third is not. http://test.wikipedia.org/wiki/Wikipedia_talk:Co-op/Flowtest2 is a Flow board, but the API query does not reflect this.