I have [[Wikipedia:MediaWiki 1.5 bugs]], which didn't have a talk page, on my
watchlist. When creating the talk page, the "Watch this page checkbox" wasn't
checked; after saving, I had a page which were on my watchlist, but with its
talk page not on my watchlist. That shouldn't be possible, as it's confusing. I
confirmed the watch/unwatch tabs weren't lying by looking at the recent changes
on the watchlist; a recent change to the page was listed but the edit to the
talk page wasn't.