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.
revealOrder: SuspenseListRevealOrder,
) {
  if (__DEV__) {
    if (Mode !== undefined && !didWarnAboutTailOptions[Mode]) {
      if (Mode !== 'collapsed' && Mode !== 'hidden') {
        didWarnAboutTailOptions[Mode] = true;
        console.error(
          '"%s" is not a supported value for  on <SuspenseList />. ' +
            'Did you mean "collapsed" or "hidden"?',
          Mode,
        );
      } else if (revealOrder !== 'forwards' && revealOrder !== 'backwards') {
        didWarnAboutTailOptions[Mode] = true;
        console.error(
          '<SuspenseList ="%s" /> is only valid if revealOrder is ' +
            '"forwards" or "backwards". ' +
            'Did you mean to specify revealOrder="forwards"?',
          Mode,
        );
      }
    }
  }
}
function validateSuspenseListNestedChild(childSlot: mixed, index: number) {
  if (__DEV__) {
    let isArray = Array.isArray(childSlot);
    let isIterable = !isArray && typeof getIteratorFn(childSlot) === 'function';
    if (isArray || isIterable) {
      let type = isArray ? 'array' : 'iterable';
      console.error(