cssbeautify bug with quotes and is it doing anything in at-media at-rules ?

gulpfile.js

/* jshint node: true */
'use strict';

var gulp = require('gulp'),
    $ = require('gulp-load-plugins')(),
    atImport = require("postcss-import"); // plugin PostCSS qui "inline" les CSS importées depuis la feuille de style principale (équivalent à une concaténation en plus souple)

var project = {
  configuration: {
    browsersList: [ '> 1%', 'last 2 versions', 'IE >= 11', 'Edge >= 12'],
    cssbeautify: {
      indent: '(indent)',
    },
  },
};


/**
 * Chemins vers les ressources ciblées
 */
var paths = {
  src: './src/', // dossier de travail
  dest: './dist/', // dossier destiné à la livraison
  styles: {
    root: 'assets/css/', // répertoire contenant le(s) fichier(s) CSS
    cssSrc: {
      mainFile: 'assets/css/style.css', // fichier CSS principal
      files: 'assets/css/{,*/}*.css', // fichiers CSS à surveiller (css/ et tous ses sous-répertoires)
    },
  },
};

var onError = {
  errorHandler: function (err) {
    console.log(err);
    this.emit('end');
  }
};

gulp.task('css', function () {
  const plugins = [
    atImport()
  ];
  return gulp.src(paths.src + paths.styles.cssSrc.mainFile)
    .pipe($.plumber(onError))
    .pipe($.postcss(plugins))
    .pipe($.cssbeautify(project.configuration.cssbeautify))
    .pipe($.autoprefixer( {browsers: project.configuration.browsersList} ))
    .pipe(gulp.dest(paths.dest + paths.styles.root));
});

gulp.task('build', ['css']);

gulp.task('default', ['build']);

package.json

{
  "name": "cssbeautify-bug-quote",
  "version": "0.0.1",
  "description": "Quote in comments has an influence on cssbeautify",
  "dependencies": {
    "gulp": "^3.x",
    "gulp-autoprefixer": "^4.x",
    "gulp-concat": "^2.x",
    "gulp-cssbeautify": "latest",
    "gulp-csscomb": "^3.x",
    "gulp-load-plugins": "^1.x",
    "gulp-plumber": "^1.x",
    "gulp-postcss": "latest",
    "postcss-import": "latest"
  },
  "repository": {
    "type": "git",
    "url": "http://domain.com/repo/lol"
  },
  "keywords": [
    "gulp",
    "static"
  ],
  "author": "PhilippeVay",
  "license": "MIT",
  "bugs": {
    "url": "http://domain.com/repo/lol/issues"
  },
  "homepage": "http://domain.com/repo/lol"
}

results - when removing quote in _navigation - .css

.selector1 {
(indent)display: block;
}

.selectorX {
(indent)display: grid;
}

@media (min-width: 100px) {
   /* l'apostrophe */   .selector1 {     display: block;   }
 .selectorY {     display: -webkit-box;     display: -ms-flexbox;     display: flex;   }
           .selectorZ {
color: red;
                }
}
   .sel-intercalaire {
-webkit-transition: all;
transition: all;
}
   /*  lautre apostrophe */
   @media (min-width: 200px) {   #menu {     display: none;   } }

src-assets-css-_template-_header.css

   .selector1 {     display: block;   }
   .selectorX {
display: grid;   }

   @media (min-width: 100px) {   /* l'apostrophe */   .selector1 {     display: block;   }
 .selectorY {     display: flex;   }
           .selectorZ {
color: red;
                }
}

.sel-intercalaire {
transition: all;
}

src-assets-css-_template-_navigation.css.css

/*  l'autre apostrophe */
@media (min-width: 200px) {   #menu {     display: none;   } }

src-assets-css-style.css

@import "_template/_header.css";
@import "_template/_navigation.css";