Wikimedia Bugzilla is closed!

Looked through this one, it requires another core change to fix.  That change can be found in gerrit as 90051 . Its a fairly simple and unobtrusive fix.

Change 92427 had a related patch set uploaded by EBernhardson:
Show flow events in watchlist

https://gerrit.wikimedia.org/r/92427

Change 92427 merged by jenkins-bot:
Show flow events in watchlist

https://gerrit.wikimedia.org/r/92427

This still isn't working on ee-flow. Watch any Flow-enabled page; you won't see changes to it in your watchlist.

Probably related: Flow actions also don't show up in my contributions.

Change 96578 had a related patch set uploaded by EBernhardson:
Hook expects old RC_* value for watchlist

https://gerrit.wikimedia.org/r/96578

Special:Contributions is actually completely independant, it needs implementation of the ContribsPager::reallyDoQuery hook

Change 96578 merged by jenkins-bot:
Hook expects old RC_* value for watchlist

https://gerrit.wikimedia.org/r/96578

Re-opening - nothing from Flow Boards is showing in my https://www.mediawiki.org/wiki/Special:Watchlist

seems to work on ee-flow but not on mediawiki.org, will have to investigate more.

Change 104781 had a related patch set uploaded by EBernhardson:
Allow page_namespace IS NULL in watchlist query

https://gerrit.wikimedia.org/r/104781

Change 104781 merged by jenkins-bot:
Allow page_namespace IS NULL in watchlist query

https://gerrit.wikimedia.org/r/104781

LiquidThreads adds a test to the watchlist query to exclude its Thread namespace:
    AND (page_namespace != '90')

But Flow changes don't have a namespace, so this is (NULL != '90') which in the hell of SQL evaluates to NULL not 1, so they were getting excluded too.

For posterity, a production Special:Watchlist query on a Wiki with Flow and LQT (but not Wikibase/Wikidata) looks like:

SELECT  rc_id,
        rc_timestamp,
        rc_user,
        rc_user_text,
        rc_namespace,
        rc_title,
        rc_comment,
        rc_minor,
        rc_bot,
        rc_new,
        rc_cur_id,
        rc_this_oldid,
        rc_last_oldid,
        rc_type,
        rc_source,
        rc_patrolled,
        rc_ip,
        rc_old_len,
        rc_new_len,
        rc_deleted,
        rc_logid,
        rc_log_type,
        rc_log_action,
        rc_params,
        wl_notificationtimestamp,
        (
          SELECT  GROUP_CONCAT(ct_tag SEPARATOR ',')
            FROM `change_tag`
            WHERE ct_rc_id=rc_id
        )
  AS ts_tags,fp_stable,fp_pending_since
  FROM `recentchanges`
        INNER JOIN `watchlist` ON (wl_user = '19998' AND (wl_namespace=rc_namespace) AND (wl_title=rc_title))
        LEFT JOIN `page` ON ((rc_cur_id=page_id))
        LEFT JOIN `flaggedpages` ON ((fp_page_id = rc_cur_id))
  WHERE (rc_timestamp > '20131228230259')
    AND ((rc_this_oldid=page_latest) OR rc_type IN ('3','142') )
    AND (page_namespace != '90')
  ORDER BY rc_timestamp DESC

Seems fixed in production in 1.23wmf9