Clicking on the read receipt of a user who was never in the room causes a soft crash #21896
Description
Steps to reproduce
- Use an appservice such as mx-puppet-discord that sends a separate read receipt for the bridge bot in DMs, even though the bridge bot is not part of the DM
- Click on said read receipt
Outcome
What did you expect?
To open the read receipt info menu
What happened instead?
A soft crash ("Can't load this message (m.room.message)") with the following error in the console:
TypeError: roomMember is null ReadReceiptPerson ReadReceiptGroup.tsx:190 React 7 unstable_runWithPriority scheduler.production.min.js:18 React 5 rageshake.ts:72:27 Operating system
NixOS unstable
Browser information
Firefox 99.0
URL for webapp
develop.element.io
Application version
Element version: 691b8d5-react-0c7a4dfcacea-js-1bb82108b742 Olm version: 3.2.8
Homeserver
Synapse 1.57.0
Will you send logs?
Yes