Last modified: 2007-08-11 16:11:40 UTC
1. Edit your raw watchlist (using the "Edit raw watchlist" link).
2. Press "Update watchlist"
3. Your watchlist is duly updated. However, the textarea below the list of updated pages still contains the old watchlist. You have to press "Edit raw watchlist" again if you want to make further updates.
Fixed in r24732.