Category "postcss-loader"

webpack.code build is broken after update postcss-loader from 3.0.0 to 4.1.0

I'm using lates webpack 4 (not 5) with latest CkEditor 5 and postcss-loader. Everything is fine, when I use postcss-loader 3.0.0. After update it to 4.1.0 I got

CSS sourceMap with sass-loader, postcss-loader, and MiniCssExtractPlugin in Webpack 5

Seems like I've followed all the instructions to generate CSS source maps, but still not finding them in the output CSS (I expect to see something like /*# sour