### ROOT CAUSE
The issue arises because `useDeferredValue` is not properly updating when a new promise is set in the production environment. The root cause is that the previous promise may not be properly cleared, causing the deferred value to remain stale.
### CODE FIX
To fix this issue, we track the current promise using a ref and ensure that only the latest promise is used. Here's how to modify the code:
```js
export function TestPreviewClient() {
const [promise, setPromise] = useState
>(initialPromise);
const deferred = useDeferredValue(promise);
const currentPromiseRef = useRef | null>(null);
useEffect(() => {
currentPromiseRef.current = promise;
}, [promise]);
function handleChange(value: string) {
// Clear the current promise to ensure only the latest is used
currentPromiseRef.current = null;
const newPromise = renderAction(value);
setPromise(newPromise);
}
return (
digitalravenco