With this:

```js
    const Add = React.memo(props => {
      return props.inner + props.outer;
    });
    Add.defaultProps = {
      inner: 2,
    };
    const LazyAdd = lazy(() => fakeImport(Add));
```

If I render `LazyAdd` again after it resolves, it won't get the `inner` default prop value. This is a bug.
current: Fiber | null,
  workInProgress: Fiber,
  renderExpirationTime: ExpirationTime,
) {
  if (enableProfilerTimer) {
    workInProgress.effectTag |= Update;
  }
  const nextProps = workInProgress.pendingProps;
  const nextChildren = nextProps.children;
  reconcileChildren(
    current,
    workInProgress,
    nextChildren,
    renderExpirationTime,
  );
  return workInProgress.child;
}
function markRef(current: Fiber | null, workInProgress: Fiber) {
  const ref = workInProgress.ref;
  if (
    (current === null && ref !== null) ||
    (current !== null && current.ref !== ref)
  ) {
    
    workInProgress.effectTag |= Ref;
  }
}
function updateFunctionComponent(