[2015 Update: The Watchlist aspect was solved (links below), but this still needs to be fixed in RC/Contribs/Histories.]
The topic creation and mandatory first comment appear as two separate entries in Special:Watchlist. If you click _hist_, it has
- YOU commented on "Topic Name" (Comment snippet) ...
- YOU created the topic "Topic Name" .
it could be handled better.
Reported by Oiyarbepsy in https://en.wikipedia.org/wiki/Topic:S3i5durwbrwlq6lf