There is a security fix to ensure that EnableFlow is always properly attributed. This may be an issue if you see users maliciously using Special:EnableFlow on pages that already exist. It should be merged shortly, but in the meantime, you can download it from Gerrit (https://gerrit.wikimedia.org/r/#/c/333301/): git fetch ssh://gerrit.wikimedia.org:29418/mediawiki/extensions/Flow refs/changes/01/333301/1 && git checkout FETCH_HEAD Matt Flaschen