### Website or app

https://github.com/eps1lon/react-devtools-repro-no-matching-node/

### Repro steps

1. `yarn start`
2. Open `App.js`
3. Uncomment the `useEffect` block
4. Click to inspect "Component" in DevTools
5. Error: "_Could not inspect element with id 5_"

Originally reported in https://github.com/facebook/react/issues/21436#issuecomment-835406075

---

https://user-images.githubusercontent.com/12292047/117544707-e6a6cd80-b022-11eb-9f8f-bb8cfd9f7743.mp4

### How often does this bug happen?

Every time

if (prevDidTimeout && nextDidTimeOut) {
       Fal
       1. 
      const nextFiberChild = nextFiber.child;
      const nextFallbackChildSet = nextFiberChild
        ? nextFiberChild.sibling
        : null;
       Not
       bec
      const prevFiberChild = prevFiber.child;
      const prevFallbackChildSet = prevFiberChild
        ? prevFiberChild.sibling
        : null;
      if (
        nextFallbackChildSet != null &&
        prevFallbackChildSet != null &&
        updateFiberRecursively(
          nextFallbackChildSet,
          prevFallbackChildSet,
          nextFiber,
          traceNearestHostComponentUpdate,
        )
      ) {
        shouldResetChildren = true;
      }
    } else if (prevDidTimeout && !nextDidTimeOut) {
       Fal
       1. 
       Not
       2.