Both active and hot show me posts from 2 days ago… I have to sort by new to browse anything remotely up to date. I think they need to adjust their algorithm.
I remember reading an issue where the scheduled task to update hot and active was breaking shortly after reboot. So those lists were getting frozen in time, until the next reboot.
Correct, it’s currently a bug in Lemmy. Your local instance/server will need to be restarted periodically to keep active and hot updating until it’s fixed.