fix(ui): Events received from the event cache trigger a decryption.

Hywan · Hywan · commit 3bada454510e · 2025-03-12T17:12:40.000+01:00
This patch fixes a bug where events coming from the event cache might be encrypted, see matrix-org#4762 to learn more. This patch updates the `room_event_cache_updates_task` to call `TimelineController::retry_event_decryption` if the origin is `Cache`.
diff --git a/crates/matrix-sdk-ui/src/timeline/builder.rs b/crates/matrix-sdk-ui/src/timeline/builder.rs
@@ -393,6 +393,10 @@ async fn room_event_cache_updates_task(
                         },
                     )
                     .await;
+
+                if matches!(origin, EventsOrigin::Cache) {
+                    timeline_controller.retry_event_decryption(None).await;
+                }
             }
 
             RoomEventCacheUpdate::AddEphemeralEvents { events } => {

Original file line number	Diff line number	Diff line change
`@@ -393,6 +393,10 @@ async fn room_event_cache_updates_task(`
`393`	`393`	`},`
`394`	`394`	`)`
`395`	`395`	`.await;`
	`396`	`+`
	`397`	`+ if matches!(origin, EventsOrigin::Cache) {`
	`398`	`+ timeline_controller.retry_event_decryption(None).await;`
	`399`	`+ }`
`396`	`400`	`}`
`397`	`401`
`398`	`402`	`RoomEventCacheUpdate::AddEphemeralEvents { events } => {`