Currently the mapping subscription feature only tracks when beatmaps are uploaded by the user you may be currently subscribed to/are following, current tooltip for it also suggests that it only provides notifications for when users upload beatmaps
The suggestion of change is to provide beatmap status changes as well such as when the beatmap is qualified/ranked/resurrected from graveyard/e.t.c instead of solely beatmap uploads only
From https://github.com/ppy/osu-web/issues/7497
Currently the mapping subscription feature only tracks when beatmaps are uploaded by the user you may be currently subscribed to/are following, current tooltip for it also suggests that it only provides notifications for when users upload beatmaps
The suggestion of change is to provide beatmap status changes as well such as when the beatmap is qualified/ranked/resurrected from graveyard/e.t.c instead of solely beatmap uploads only