### 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

case HostRoot:
         Roo
         Ins
        const id = getFiberIDThrows(fiber);
        const pseudoKey = rootPseudoKeys.get(id);
        if (pseudoKey === undefined) {
          throw new Error('Expected mounted root to have known pseudo key.');
        }
        displayName = pseudoKey;
        break;
      case HostComponent:
        displayName = fiber.type;
        break;
      default:
        break;
    }
    return {
      displayName,
      key,
      index,
    };
  }
   Produces a serializable representation that does a best effort
   of identifying a particular Fiber between page reloads.
   The return path will contain Fibers that are "invisible" to the store
   because their keys and indexes are important to restoring the selection.
  function getPathForElement(id: number): Array<PathFrame> | null {
    let fiber = idToArbitraryFiberMap.get(id);
    if (fiber == null) {
      return null;