Devtools display wrong event content for leave Membership Events

[Johennes]

Steps to reproduce

1. Have two accounts in a room
2. Leave the room with one account
3. Inspect the leave event in devtools using the other account
4. Notice how the event content contains displayname and avatar_url
5. Query the room state via /_matrix/client/v3/rooms/{roomId}/state
6. Notice how the event content does not contain displayname and avatar_url

$ curl 'https://matrix-client.matrix.org/_matrix/client/v3/rooms/.../state/...' -H ...
{"membership":"leave"}

Outcome

What did you expect?

Devtools to reflect reality.

What happened instead?

Devtools lied to me.

Operating system

macOS

Browser information

Firefox 143.0.1

URL for webapp

https://app.element.io

Application version

Element version: 1.12.0 Crypto version: Rust SDK 0.14.0 (c3b7918), Vodozemac 0.9.0

Homeserver

matrix.org

Will you send logs?

No

[t3chguy]

Fixed by matrix-org/matrix-js-sdk#5011

[Johennes]

For a second you made me believe that you pushed this PR yourself in sniper-response to my issue. 😅