When I want to go back to the previous page - usually from posts to return to the section eg Briny Bar - if I click on the Go Back arrow (top left), when the previous page arrives, the "New Posts" hasn't been updated (ie still shows previous posts as unread) - if instead I go up to the head of the page, and click on the menu for the previous page, when it arrives, the "New Posts" is updated correctly as read.