I can't take out styles from all components when assembling 'production', what am I doing wrong?

Question

JavaScript

Good time of the day.
When assembling 'production', only those styles that I include in index.js (input to the application) are taken out.
For each component there is a separate folder, which contains ComponentJS, index.scss, inside each component I include styles import './index, scss'
I did everything as described in the office. 'Extract Text Plugin' documentation, { allChunks: true }.
webpack.config.js:
https://codepen.io/PolyakhAlex/pen/aLrxVN?editors=0010;
At the very bottom, I indicated the setting for 'prod' which I put into a separate module.
Thanks for the help!