Autoprefixer not using "grid: autoplace" with cssnano and postcss

Question

We are using postcss with cssnano and autoprefixer. My problem is that postcss does not use the "grid: autoplace" in my postcss.config.js.

This is my postcss.config.js:

const cssnano = require('cssnano');
const mqpacker = require('css-mqpacker');
const postcssPresetEnv = require('postcss-preset-env');

module.exports = (ctx) => ({
  map: ctx.options.map,
  parser: false,
  plugins: [
    postcssPresetEnv(),
    mqpacker({ sort: true }),
    cssnano({
      preset: [
        'advanced',
        {
          autoprefixer: {
            add: true,
            grid: 'autoplace',
          },
          reduceIdents: false,
          zindex: false,
        },
      ],
    }),
  ],
});

On the other hand, when I add /* autoprefixer grid: autoplace */ to my css file and run:

postcss ./dist/*.css --verbose > test.css

Postcss uses grid and adds the -ms prefixes. Why is it ignoring the property in the config file?