@ephraimt I found an issue in the webpack dev configuration. We are currently using eval-source-map to generate the source map, but it seems that it’s bugged (breakpoints can be added but the execution does not stop). Check the following issue in the official Webpack repository. To fix it and to be able to debug, open your /projectName/webpack.dev.config.js file and change devtool: 'eval-source-map', with devtool: 'inline-source-map', It will fix the issue (I made the screenshot with a Vue template, but React templates work as well):