There appears to be a mismatch between the React UMD filenames copied during development builds and the filenames the app expects at runtime.

• webpack.config.ts copies dev filenames in dev mode and minified filenames otherwise
• The app bundles React as an external (React / ReactDOM), so the runtime script tags must line up exactly

If templates/pages expect react.production.min.js and react-dom.production.min.js during a dev build, the app can fail to boot and render a blank page.