diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 99e839abf10..ed4063cc616 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -240,6 +240,9 @@ jobs:
       - name: Check types and lint and oxfmt
         run: pnpm check
 
+      - name: Strict TS build smoke
+        run: pnpm build:strict-smoke
+
       - name: Enforce safe external URL opening policy
         run: pnpm lint:ui:no-raw-window-open
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 317ffa202f6..f398fa4fc8a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -118,6 +118,7 @@ Docs: https://docs.openclaw.ai
 - Discord/Agent component interactions: accept Components v2 `cid` payloads alongside legacy `componentId`, and safely decode percent-encoded IDs without throwing on malformed `%` sequences. Landed from contributor PR #29013 by @Jacky1n7. Thanks @Jacky1n7.
 - Matrix/Directory room IDs: preserve original room-ID casing for direct `!roomId` group lookups (without `:server`) so allowlist checks do not fail on case-sensitive IDs. Landed from contributor PR #31201 by @williamos-dev. Thanks @williamos-dev.
 - Discord/Inbound media fallback: preserve attachment and sticker metadata when Discord CDN fetch/save fails by keeping URL-based media entries in context, with regression coverage for save failures and mixed success/failure ordering. Landed from contributor PR #28906 by @Sid-Qin. Thanks @Sid-Qin.
+- Auto-reply/Block reply timeout path: normalize `onBlockReply(...)` execution through `Promise.resolve(...)` before timeout wrapping so mixed sync/async callbacks keep deterministic timeout behavior across strict TypeScript build paths. (#19779) Thanks @dalefrieswthat and @vincentkoc.
 - Docs/Docker images: clarify the official GHCR image source and tag guidance (`main`, `latest`, `<version>`), and document that `OPENCLAW_IMAGE` skips local image builds but still uses the repo-local compose/setup flow. (#27214, #31180) Fixes #15655. Thanks @ipl31.
 - Docker/Image base annotations: add OCI labels for base image plus source/documentation/license metadata, include revision/version/created labels in Docker release builds, and document annotation keys/release context in install docs. Fixes #27945. Thanks @vincentkoc.
 - Agents/Model fallback: classify additional network transport errors (`ECONNREFUSED`, `ENETUNREACH`, `EHOSTUNREACH`, `ENETRESET`, `EAI_AGAIN`) as failover-worthy so fallback chains advance when primary providers are unreachable. Landed from contributor PR #19077 by @ayanesakura. Thanks @ayanesakura.
diff --git a/package.json b/package.json
index 1f72bd29a08..5b2882fc3f1 100644
--- a/package.json
+++ b/package.json
@@ -57,6 +57,7 @@
     "android:test:integration": "OPENCLAW_LIVE_TEST=1 OPENCLAW_LIVE_ANDROID_NODE=1 vitest run --config vitest.live.config.ts src/gateway/android-node.capabilities.live.test.ts",
     "build": "pnpm canvas:a2ui:bundle && tsdown && pnpm build:plugin-sdk:dts && node --import tsx scripts/write-plugin-sdk-entry-dts.ts && node --import tsx scripts/canvas-a2ui-copy.ts && node --import tsx scripts/copy-hook-metadata.ts && node --import tsx scripts/copy-export-html-templates.ts && node --import tsx scripts/write-build-info.ts && node --import tsx scripts/write-cli-startup-metadata.ts && node --import tsx scripts/write-cli-compat.ts",
     "build:plugin-sdk:dts": "tsc -p tsconfig.plugin-sdk.dts.json",
+    "build:strict-smoke": "pnpm canvas:a2ui:bundle && tsdown && pnpm build:plugin-sdk:dts",
     "canvas:a2ui:bundle": "bash scripts/bundle-a2ui.sh",
     "check": "pnpm format:check && pnpm tsgo && pnpm lint && pnpm lint:tmp:no-random-messaging && pnpm lint:tmp:channel-agnostic-boundaries && pnpm lint:tmp:no-raw-channel-fetch && pnpm lint:auth:no-pairing-store-group && pnpm lint:auth:pairing-account-scope && pnpm check:host-env-policy:swift",
     "check:docs": "pnpm format:docs:check && pnpm lint:docs && pnpm docs:check-links",
diff --git a/src/auto-reply/reply/block-reply-pipeline.ts b/src/auto-reply/reply/block-reply-pipeline.ts
index c0b097d5fdd..752c70a1da2 100644
--- a/src/auto-reply/reply/block-reply-pipeline.ts
+++ b/src/auto-reply/reply/block-reply-pipeline.ts
@@ -114,10 +114,12 @@ export function createBlockReplyPipeline(params: {
           return false;
         }
         await withTimeout(
-          onBlockReply(payload, {
-            abortSignal: abortController.signal,
-            timeoutMs,
-          }) ?? Promise.resolve(),
+          Promise.resolve(
+            onBlockReply(payload, {
+              abortSignal: abortController.signal,
+              timeoutMs,
+            }),
+          ),
           timeoutMs,
           timeoutError,
         );