When a page is moved, the move does not register on the watchlist, and the
entire page disappears until the next edit is made to the page.
Steps to reproduce:
- Make a new page (in your user namespace) and add to watchlist (as well as
make a few edits)
- View watchlist, and see how it shows up (near the top)
- Move the page
- View watchlist
We see the page move in our watchlist.
The page disappears from the watchlist!
From user reports, the bug appears to be a regression. There may be a related
bug, but I wasn't able to find it.