Steps to replicate the issue (include links if applicable):
See dewiki recent changes and e.g. history 1 and history 2. Other wikis such as meta are apparently not affected (meta recent changes).
What happens?:
Reverted main space edits are not tagged.
What should have happened instead?:
Reverted main space edits should be tagged as reverted.
Other information (browser name/version, screenshots, etc.):
Maybe this is related to FlaggedRevisions somehow as only dewiki and only the main namespace seems to be affected?