fix(call): grant the widget MSC4407 sticky-event capabilities - #2066
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The embedded call widget publishes its MatrixRTC membership as a sticky event, which ClientWidgetApi refuses without org.matrix.msc4407.send.sticky_event. The MembershipManager then shut down and the call dropped. Grant the send and receive capabilities and implement sendStickyEvent, sendDelayedStickyEvent and readStickyEvents on CallWidgetDriver. Also register an MSC4480 sticky_events extension on sliding sync, since matrix-js-sdk only reads sticky events out of /sync v2.
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| Status | Preview URL | Commit | Alias | Updated (UTC) |
|---|---|---|---|---|
| ✅ Deployment successful! | https://pr-2066-sable.raspy-dream-bb1d.workers.dev | 4dd969e | pr-2066 |
Tue, 08 Sep 2026 17:57:58 GMT |
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