diff --git a/tests/playwright/sx-inspect.js b/tests/playwright/sx-inspect.js
index ea5c0866..2159b291 100644
--- a/tests/playwright/sx-inspect.js
+++ b/tests/playwright/sx-inspect.js
@@ -1391,10 +1391,9 @@ async function modeSandbox(page, expr, files, setup, stack, bytecode) {
       if (typeof fn === 'function' && fn.__sx_handle === undefined) return fn;
       if (fn && fn.__sx_handle !== undefined) {
         return function() {
-          // Do NOT call _driveAsync here — the suspension propagates through
-          // the normal CEK/VM return path. The outer callFn handles it.
-          // Calling _driveAsync would create a duplicate resume chain.
-          return K.callFn(fn, Array.from(arguments));
+          const r = K.callFn(fn, Array.from(arguments));
+          window._driveAsync(r);
+          return r;
         };
       }
       return function() {};