### 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_
const Bar = () => [<Component key="0" />, <Component key="1" />];
      const foo = <Foo key="foo" />;
      const bar = <Bar key="bar" />;
      const container = document.createElement('div');
      act(() => legacyRender(<Root>{[foo, bar]}</Root>, container));
      expect(store).toMatchSnapshot('1: mount');
      act(() => legacyRender(<Root>{[bar, foo]}</Root>, container));
      expect(store).toMatchSnapshot('3: reorder children');
      act(() => store.toggleIsCollapsed(store.getElementIDAtIndex(0), true));
      expect(store).toMatchSnapshot('4: collapse root');
      act(() => store.toggleIsCollapsed(store.getElementIDAtIndex(0), false));
      expect(store).toMatchSnapshot('5: expand root');
    });
  });
  describe('collapseNodesByDefault:true', () => {
    beforeEach(() => {
      store.collapseNodesByDefault = true;
    });
    it('should support mount and update operations', () => {
      const Parent = ({count}) =>
        new Array(count).fill(true).map((_, index) => <Child key={index} />);
      const Child = () => <div>Hi!</div>;
      const container = document.createElement('div');
      act(() =>
        legacyRender(
          <React.Fragment>
            <Parent count={1} />
            <Parent count={3} />
          </React.Fragment>,
          container,