react-dom@alpha UMD bundle throws when rendering #22113
Description
React version: 18.0.0-alpha-bd255700d-20210816 or main branch
Steps To Reproduce
- Use ReactDOM development from alpha version or main branch
- Call ReactDOM.render() or ReactDOM.createRoot(...).render()
Link to code example: https://jsfiddle.net/jarhar/sLz2f5q1/
If you open DevTools you can see the error which is preventing rendering. If you change the scripts from development.js to production.min.js, you can see the problem go away.