Hi guys,
This has been happening for some time and is a real bugbear for forumites.
Topics with unread posts are highlighted in blue on the dropdown list. Pick one, go and read the new posts, even make a new post. Then click on the dropdown again and the topic still shows in blue.
This behaviour is not consistent 100% of the time but it appears that it does occur far more often than it does not.
www.cottagesmallholder.com