thank you @EEight for you work! I'm a compulsive reader, and missing posts makes me (relatively) sick.
Each time I'm away from keyboard for a week or two I experience the same behaviour : instead of the tens of unread posts I'd hope to find in my "unread" section, only the more recent of them are to be found. I couldn't find any option in my profile settings to be tweaked. Is there something I can do, outside of using the "recent" section and go down the timeline?