Failing test for deduped props of elements in fragments

Author: eps1lon

packages/react-server-dom-webpack/src/__tests__/ReactFlightDOMBrowser-test.js

@@ -525,6 +525,53 @@ describe('ReactFlightDOMBrowser', () => {
     expect(container.innerHTML).toBe('{"foo":1}{"foo":1}');
   });
 
+  it('should handle deduped props of elements in fragments', async () => {
+    let resolveFooClientComponentChunk;
+
+    const FooClient = clientExports(
+      function Foo({children, item}) {
+        return children;
+      },
+      '1',
+      '/foo.js',
+      new Promise(resolve => (resolveFooClientComponentChunk = resolve)),
+    );
+
+    const shared = <div />;
+
+    function Server() {
+      return (
+        <FooClient track={shared}>
+          <React.Fragment>{shared}</React.Fragment>
+        </FooClient>
+      );
+    }
+
+    const stream = await serverAct(() =>
+      ReactServerDOMServer.renderToReadableStream(<Server />, webpackMap),
+    );
+
+    function ClientRoot({response}) {
+      return use(response);
+    }
+
+    const response = ReactServerDOMClient.createFromReadableStream(stream);
+    const container = document.createElement('div');
+    const root = ReactDOMClient.createRoot(container);
+
+    await act(() => {
+      root.render(<ClientRoot response={response} />);
+    });
+
+    expect(container.innerHTML).toBe('');
+
+    await act(() => {
+      resolveFooClientComponentChunk();
+    });
+
+    expect(container.innerHTML).toBe('<div></div>');
+  });
+
   it('should progressively reveal server components', async () => {
     let reportedErrors = [];