diff --git a/.openclaw-sync/source.json b/.openclaw-sync/source.json
index 8935e3685..5166dd17e 100644
--- a/.openclaw-sync/source.json
+++ b/.openclaw-sync/source.json
@@ -1,5 +1,5 @@
 {
   "repository": "openclaw/openclaw",
-  "sha": "3c89f5d5378d823ef383a94732be3002d2373b4b",
-  "syncedAt": "2026-04-22T19:03:21.770Z"
+  "sha": "5462d4d5c5179bb4ae2729efc42ebecb209637fb",
+  "syncedAt": "2026-04-22T19:05:36.139Z"
 }
diff --git a/docs/concepts/messages.md b/docs/concepts/messages.md
index 6490faf51..932a71fe3 100644
--- a/docs/concepts/messages.md
+++ b/docs/concepts/messages.md
@@ -167,6 +167,10 @@ Defaults live under `agents.defaults.silentReply` and
 `agents.defaults.silentReplyRewrite`; `surfaces.<id>.silentReply` and
 `surfaces.<id>.silentReplyRewrite` can override them per surface.
 
+When the parent session has one or more pending spawned subagent runs, bare
+silent replies are dropped on all surfaces instead of being rewritten, so the
+parent stays quiet until the child completion event delivers the real reply.
+
 ## Related
 
 - [Streaming](/concepts/streaming) — real-time message delivery