Comment 4 for bug 1813947

There are 2 ways for a watchlist on a page to be set up

1) Explicitly clicking the 'Add page to watchlist' link under the page's '...' (3 dots) menu

2) By placing a comment on the page - the commenter is automatically added to the watchlist for the page

If the users did neither of these things then I'm not sure how they got onto the watchlist - unless someone altered the data in the database directly

Cheers
Robert