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Commit `5c749146259c`

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atagen <boss@atagen.co>2026-10-25 13:25 UTC

1 file changed+15-2

packs: reply a threaded sticker's fallback to the thread's newest event

Clients without thread support showed every threaded sticker as a reply to the root. The sdk's threaded timeline points the fallback at the latest event in the thread, so stickers now do the same from the root's bundled thread summary.

Modified file: src/engine/packs.rs+15 additions−2 deletions@@ -389,13 +389,26 @@ async fn send_sticker(
         "url": url,
         "info": image.get("info").cloned().unwrap_or_else(|| json!({})),
     });
-    // the same fallback the send queue gives a threaded attachment with no reply
+    // clients without threads see a reply to the newest event in the thread, the way the
+    // sdk's threaded timeline falls back, and the root when that isn't known
     if let Some(root) = timeline_id.thread_root() {
+        let latest = room
+            .load_or_fetch_event(root, None)
+            .await
+            .ok()
+            .and_then(|event| event.raw().get_field::<JsonValue>("unsigned").ok().flatten())
+            .and_then(|unsigned| {
+                unsigned
+                    .pointer("/m.relations/m.thread/latest_event/event_id")
+                    .and_then(JsonValue::as_str)
+                    .map(str::to_owned)
+            })
+            .unwrap_or_else(|| root.to_string());
         content["m.relates_to"] = json!({
             "rel_type": "m.thread",
             "event_id": root,
             "is_falling_back": true,
-            "m.in_reply_to": { "event_id": root },
+            "m.in_reply_to": { "event_id": latest },
         });
     }
     room.send_queue()

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Commit 5c749146259c

Commit `5c749146259c`