The function that allows you to see new posts since your last visit seems to be working differently for me over the past few weeks.
Previously, when I used that link it'd just show the new posts since my last visit. But recently it seems to not be resetting, and all posts I haven't read are on there -- including many that were not new since my last visit. I'm logged in properly and such.
Is there something I should do differently, or has the functionality been changed?