I’m using Element Desktop for connecting to Fedora rooms and in all rooms I always see all users as offline (mine too).
I’m not sure if this is a bug of Element Desktop or the effect of some setting server side.
Searching online I’ve found a couple of bugs opened Matrix side which make me think that Fedora Matrix server has the presence feature turned off:
https://github.com/vector-im/element-web/issues/2667
https://github.com/matrix-org/synapse/issues/9478
This is a feature that I really miss from IRC, is it possible to turn it on?