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.
return (
        <SuspenseList revealOrder="together">
          <Suspense fallback={<Text text="Loading A" />}>
            <A />
          </Suspense>
          <SuspenseList>
            <Suspense fallback={<Text text="Loading B" />}>
              <B />
            </Suspense>
            <Suspense fallback={<Text text="Loading C" />}>
              <C />
            </Suspense>
          </SuspenseList>
        </SuspenseList>
      );
    }
    await A.resolve();
    await B.resolve();
    ReactNoop.render(<Foo />);
    expect(Scheduler).toFlushAndYield([
      'A',