https://codesandbox.io/s/nostalgic-frost-53gys?file=/src/App.js

```js
import * as React from "react";

function S(props) {
  return <React.Suspense {...props} />;
}

export default function App() {
  return (
    <React.unstable_SuspenseList revealOrder="forwards">
      <S fallback={null}>
        <Bad />
      </S>
      <S fallback={null}>
        <h1>wow</h1>
      </S>
    </React.unstable_SuspenseList>
  );
}

function Bad() {
  const [c, setC] = React.useState(0);
  read(c);
  const r = React.useRef(true);
  React.useEffect(() => {
    if (r.current) {
      r.current = false;
      setC((x) => x + 1);
    }
  }, [c]);
  return <h2>wow</h2>;
}

const cache = {};
function read(i) {
  if (cache[i]) {
    if (cache[i].result) {
      return cache[i].result;
    } else {
      throw cache[i].promise;
    }
  }
  cache[i] = {
    promise: new Promise((resolve) => {
      setTimeout(() => {
        cache[i].result = "foo";
        resolve();
      }, 1000);
    })
  };
  throw cache[i].promise;
}
```
/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @emails react-core
 */
let React;
let ReactNoop;
beforeEach(() => {
  React = require('react');
  ReactNoop = require('react-noop-renderer');
});
test('warns in DEV if return pointer is inconsistent', async () => {
  const {useRef, useLayoutEffect} = React;
  let ref = null;
  function App({text}) {
    ref = useRef(null);
    return (
      <>
        <Sibling text={text} />
        <div ref={ref}>{text}</div>
      </>
    );
  }
  function Sibling({text}) {