### Website or app

https://codesandbox.io/s/react-playground-forked-j4niq

### Repro steps

Emoji seem supported but produce strange symbole

![image](https://user-images.githubusercontent.com/24865815/133793744-55a55582-90ad-425f-8a40-4c061a3c1d80.png)

To test emoji on Window Os, use `[win]+[.]` 🟩


### How often does this bug happen?

Every time

### DevTools package (automated)

_No response_

### DevTools version (automated)

_No response_

### Error message (automated)

_No response_

### Error call stack (automated)

_No response_

### Error component stack (automated)

_No response_

### GitHub query string (automated)

_No response_
isSimulated ? 'unmount is simulated' : '',
      );
    }
    if (trackedPathMatchFiber !== null) {
       W
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      if (
        fiber === trackedPathMatchFiber ||
        fiber === trackedPathMatchFiber.alternate
      ) {
        setTrackedPath(null);
      }
    }
    const unsafeID = getFiberIDUnsafe(fiber);
    if (unsafeID === null) {
       I
       I
       O
      
       T
      
       T
      return;
    }
     F
    const id = ((unsafeID: any): number);
    const isRoot = fiber.tag === HostRoot;
    if (isRoot) {
       R