This weird problem occurs.

I know my thread title is a bit weird, but check this out. ;)
http://postimg.org/image/5zblodsgx/
http://postimg.org/image/8wtf8cwjv/

This is not Photoshopped. If you don't know what the problem is, there's 2 unread posts yet you can't see anything in detail. Also, I can assure you I've replied to all my posts. And if it's not convincing, the 2nd unread post is actually somehow reproduced, I forgot how I did it.

So what solutions are there? I'll be here for a reply.
Thanks! :)
 
Solution
This is a minor bug. If threads you've tracked are replied to and then deleted, they stay in the notifications count but aren't visible to you.

Go to 'Tracked threads' and click the 'Mark all as read' link in the top right.