title: How to fix hmr for css in mini-css-extract-plugin?
body: <p>I have simple webpack config for my js app, which is include <code>mini-css-extract-plugin</code> with 'hot-module-reloading'.</p>
  
  <p>I faced a problem. hmr works 1 or 2 times (refreshing page while dev mode) and just stop working. Why?</p>
  
  <p>My "plugins" field in webpack.config.js</p>
  
  <pre><code>[
      new HTMLplugin(),
      new CSSplugin({
          filename: filename('css'),
          chunkFilename: devMode ? '[id].css' : '[id].[hash].css',
          reloadAll: true
      })
  ]
  </code></pre>