https://codesandbox.io/s/upbeat-frost-3tt25

1. Press Suspend, see "Loading..."
2. Wait five seconds, you'll see "Happy birthday" at some point 
3. You won't see it again no matter how long you wait

Expected: you'll see it every five seconds.
componentDidUpdate() {
        Scheduler.unstable_yieldValue('Commit: ' + this.props.text);
      }
      componentDidMount() {
        Scheduler.unstable_yieldValue('Commit: ' + this.props.text);
      }
      render() {
        return (
          <Suspense fallback={<Text text="Loading..." />}>
            <AsyncText ms={20000} text={this.props.text} />
          </Suspense>
        );