Website or app

A basic Create React App project with React DevTools connected via script tag.

Repro steps

1. Install React DevTools globally: npm install -g react-devtools or yarn global add react-devtools
2. Create a new React app: npx create-react-app my-app
3. Navigate to the project directory: cd my-app
4. Open public/index.html and add the following script tag at the beginning of head tag:

   <script src="http://localhost:8097"></script>

5. Start the development server: npm start or yarn start
6. In a separate terminal, start React DevTools: react-devtools
7. Open the app in a browser and check the console for any connection errors

This bug happens consistently when following the repro steps above. It occurs with the recently released React DevTools version 6.0.0, while it worked correctly in the previous version.

How often does this bug happen?

Every time

DevTools package (automated)

No response

DevTools version (automated)

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Error message (automated)

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Error call stack (automated)

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Error component stack (automated)

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GitHub query string (automated)

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