### 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

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

### How often does this bug happen?

Every time

https:github.com/facebook/react/blob/master/packages/react-reconciler/src/ReactFiberTreeReflection.js
  function isFiberMountedImpl(fiber: Fiber): number {
    let node = fiber;
    let prevNode = null;
    if (!fiber.alternate) {
       If 
       yet
      if ((getFiberFlags(node) & Placement) !== NoFlags) {
        return MOUNTING;
      }
       Thi
      if ((getFiberFlags(node) & Incomplete) !== NoFlags) {
        return UNMOUNTED;
      }
      while (node.return) {
        prevNode = node;
        node = node.return;
        if ((getFiberFlags(node) & Placement) !== NoFlags) {
          return MOUNTING;
        }
         Thi
        if ((getFiberFlags(node) & Incomplete) !== NoFlags) {