revert uncessassary hacks

lib/builder/builder.js

@@ -576,8 +576,7 @@ module.exports = class Builder {
             publicPath: this.options.build.publicPath,
             stats: this.webpackStats,
             logLevel: 'silent',
-            watchOptions: this.options.watchers.webpack,
-            watchOffset: 0 // Handled by time-fix-plugin
+            watchOptions: this.options.watchers.webpack
           },
           this.options.build.devMiddleware
         )

test/fixtures/ssr/nuxt.config.js

@@ -8,6 +8,6 @@ module.exports = {
   },
   build: {
     stats: false,
-    extractCSS: false // https://github.com/webpack/webpack/pull/6597
+    extractCSS: true
   }
 }