diff --git a/scripts/github/run-openclaw-cross-os-release-checks.sh b/scripts/github/run-openclaw-cross-os-release-checks.sh
index b8a3e3541a42..783d3b9c7ab7 100755
--- a/scripts/github/run-openclaw-cross-os-release-checks.sh
+++ b/scripts/github/run-openclaw-cross-os-release-checks.sh
@@ -63,12 +63,14 @@ command -v "${npm_cmd}" >/dev/null 2>&1 || {
 
 if [[ ! -f "${loader_path}" ]]; then
   mkdir -p "${tool_dir}"
+  # The loader only needs tsx's packaged JS and esbuild platform package.
+  # Skipping lifecycle scripts avoids npm child-shell drift on Windows runners.
   if [[ -n "${npm_cli_js}" ]]; then
-    if ! "${node_cmd}" "${npm_cli_arg}" install --prefix "${npm_tool_dir}" --no-save --no-package-lock "tsx@${tsx_version}" >/dev/null; then
+    if ! "${node_cmd}" "${npm_cli_arg}" install --prefix "${npm_tool_dir}" --no-save --no-package-lock --ignore-scripts "tsx@${tsx_version}" >/dev/null; then
       echo "failed to install cross-OS release-check loader with ${node_cmd} ${npm_cli_arg}." >&2
       exit 127
     fi
-  elif ! "${npm_cmd}" install --prefix "${npm_tool_dir}" --no-save --no-package-lock "tsx@${tsx_version}" >/dev/null; then
+  elif ! "${npm_cmd}" install --prefix "${npm_tool_dir}" --no-save --no-package-lock --ignore-scripts "tsx@${tsx_version}" >/dev/null; then
     echo "failed to install cross-OS release-check loader with ${npm_cmd}." >&2
     exit 127
   fi
diff --git a/test/scripts/openclaw-cross-os-release-workflow.test.ts b/test/scripts/openclaw-cross-os-release-workflow.test.ts
index 022975fb1f6d..643024190e2b 100644
--- a/test/scripts/openclaw-cross-os-release-workflow.test.ts
+++ b/test/scripts/openclaw-cross-os-release-workflow.test.ts
@@ -43,6 +43,7 @@ describe("cross-OS release checks workflow", () => {
     expect(wrapper).toContain('loader_arg="$(cygpath -w "${loader_path}")"');
     expect(wrapper).toContain('"${node_cmd}" "${npm_cli_arg}" install --prefix "${npm_tool_dir}"');
     expect(wrapper).toContain('"${npm_cmd}" install --prefix "${npm_tool_dir}"');
+    expect(wrapper.match(/--ignore-scripts/g)).toHaveLength(2);
     expect(wrapper).toContain('exec "${node_cmd}" --import "${loader_url}"');
   });
 });