### 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_
<>
                <Example />
                <Noop />
              </>,
              container,
            );
          }, false);
          flushPendingBridgeOperations();
          expect(store).toMatchInlineSnapshot(`
            ✕ 1, ⚠ 1
            [root]
                <Example> ✕⚠
                <Noop>
          `);
        });
        // After a delay, passive effects should be committed as well
        act(flushPendingPassiveErrorAndWarningCounts, false);
        expect(store).toMatchInlineSnapshot(`
          ✕ 2, ⚠ 2
          [root]
              <Example> ✕⚠
              <Noop>
        `);
        act(() => ReactDOM.unmountComponentAtNode(container));
        expect(store).toMatchInlineSnapshot(``);
      });
    });
    it('from react get counted', () => {
      const container = document.createElement('div');
      function Example() {