Steps to reproduce

Open the "Settings" page for a room when connected to a Dendrite server and no local aliases are displayed, even if they exist.

Seems to be the cause of matrix-org/dendrite#2486.

Outcome

What did you expect?

We should use the specced /_matrix/client/v3/rooms/{roomID}/aliases endpoint and not gate on unstable features.

What happened instead?

Element Web seems to be using unstable /_matrix/client/unstable/org.matrix.msc2432/rooms/{roomID}/aliases to look up local aliases for a room. Additionally, it seems to only look up local aliases for the room if org.matrix.msc2432 appears in the unstable_features.

Operating system

All

Browser information

All

URL for webapp

app.element.io

Application version

1.10.13

Homeserver

dendrite.matrix.org

Will you send logs?

No