Thunderbird Inbox
Inbox sidebar shows one unread message but there are no highlighted (unread) messages in the inbox message list
All Replies (2)
But is there a sub folder with one. That appears to be the case in most reports like yours. The rest are fixed by right clicking the folder, selecting properties and then repair.
Modified
Did as you suggested but didn't solve problem. Finally right clicked on inbiox folder and then selected "Mark Folder Read" and that did the trick. Thanks.