Riot-web don't send or show unavailable (idle, away, last active, last seen) presence states from client app in user status

[MurzNN]

I have Synapse homeserver with presence states enabled. And on large room I see only Online and Offline for XXh presence statuses for all people, and never see Unavailable for XXh (or away, idle, last active, last seen) status for users, that don't touch Riot app or computer many hours. And same problem with Riot Android app.

Matrix spec provide unavailable state for this info:

["online", "offline", "unavailable"]

Does Riot use this state and send activity info as last_active_ago argument? If yes, why I don't see it in my homeserver setup? And how to enable sending away events in Riot-web and display them, confugure away timeout, etc?

[richvdh]

It does show users with the unavailable presence as "idle". The issue is that there aren't very many such users.

(The issue is compounded by the fact that presence is disabled on matrix.org, as per #2667)

[richvdh]

in terms of setting our state to unavailable: closing in favour of #4813