0. Log in.
- Add a non-existent article to your watchlist.
- Open the watchlist in list view: https://en.m.wikipedia.org/w/index.php?title=Special:Watchlist&watchlistview=a-z
- Search for the name of the deleted article.
Observed: The star in that line is white.
Expected: The star in that line is supposed to be green. The article is in the watchlist, so it should be marked just like all others. The red color of the link already indicates that it's deleted.