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.
state = {page: 'none'};
        render() {
          transitionToPage = page => this.setState({page});
          let page = this.state.page;
          if (page === 'none') {
            return null;
          }
          return (
            <Suspense fallback={<Text text="Loading..." />}>
              <AsyncText text={page} ms={5000} />
            </Suspense>
          );
        }
      }
      ReactNoop.render(<App />);
      expect(Scheduler).toFlushAndYield([]);