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.
workInProgress: Fiber,
  firstChild: null | Fiber,
  renderExpirationTime: ExpirationTime,
): void {
   
   
   
  let node = firstChild;
  while (node !== null) {
    if (node.tag === SuspenseComponent) {
      const state: SuspenseState | null = node.memoizedState;
      if (state !== null) {
        scheduleWorkOnFiber(node, renderExpirationTime);
      }
    } else if (node.tag === SuspenseListComponent) {
       
       
       
       
       
      scheduleWorkOnFiber(node, renderExpirationTime);
    } else if (node.child !== null) {
      node.child.return = node;