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.
): Fiber | null {
  const updateExpirationTime = workInProgress.expirationTime;
  if (__DEV__) {
    if (workInProgress._debugNeedsRemount && current !== null) {
       
      return remountFiber(
        current,
        workInProgress,
        createFiberFromTypeAndProps(
          workInProgress.type,
          workInProgress.key,
          workInProgress.pendingProps,
          workInProgress._debugOwner || null,
          workInProgress.mode,
          workInProgress.expirationTime,
        ),
      );
    }
  }
  if (current !== null) {
    const oldProps = current.memoizedProps;
    const newProps = workInProgress.pendingProps;
    if (
      oldProps !== newProps ||
      hasLegacyContextChanged() ||
       
      (__DEV__ ? workInProgress.type !== current.type : false)
    ) {