I've found the same thingJust thought about this. Maybe your own posts don"t register on this software as a new unread post and therefore aren't displayed on the new posts page. The old software always displayed my own posts on the new posts page. Maybe this version is different. Is this just me experiencing this?
Yes that is what it is. Your own posts do not register if accessed via the new posts tab. This thread just appeared after you made a post. The new posts column does update with your own new posts, but the new posts tab does not. Very confusing, but at least the mystery is solved. This feature may really confuse new users unless the settings can be adjusted.