we should set our presence to idle when the app is in the background

[richvdh]

we could use the same metric as we use for sending read-receipts etc: if the user hasn't interacted with the window in some way since the last sync, we should set the flag in /sync which says 'make me idle'

[lampholder]

Seems sensible :)

P3'ed just 'cause afaik this isn't on anyone's immedate agenda.

[MurzNN]

This feature is successfully implemented already in Android app.

[andybalaam]

We've had to revert the fix for this pending a Synapse update: matrix-org/matrix-react-sdk#11365