Vuetify: 0.17.6
Vue: 2.5.2
Browsers: Firefox 57.0
OS: Mac OS 10.13
it might be challenging as I do not know conditions when Webpack creates 0.js or 1.js files with vuetify.min.css
Webpage should be refreshed in a clean manner - not showing unstyled elements.
on page refresh you can notice:

How long you can see it:

https://github.com/vuetifyjs/vuetify
I'm guessing it's due to styling on render?
In my case webpack creates additional file 0.js (sometimes 1.js) when using
import('../node_modules/vuetify/dist/vuetify.min.css')
in my main.js file
It's exactly the same when I start everything from scratch with vue init vuetifyjs/webpack with all updated packages.
Doesn't matter if I use npm run dev or npm run build and publish to my server
When I look into 0.js I can see in the first lines:
webpackJsonp([0],{
/***/ "./node_modules/css-loader/index.js?{\"sourceMap\":true}!./node_modules/postcss-loader/lib/index.js?{\"sourceMap\":true}!./node_modules/vuetify/dist/vuetify.min.css":
/***/ (function(module, exports, __webpack_require__) {
I figured out that
1) Firstly app.js is loaded in 178ms on Chrome ( 1.1MB )- that sets up everything as on the attached screenshot (no v-toolbar etc)
2) Then 0.js is loaded in 212ms (109 KB) . After it's loaded - the webpage is styled wtih Vuetify and looks as it should.

Workaround
The only one workaround is to remove import('../node_modules/vuetify/dist/vuetify.min.css') from main.js and get CSS directly in index.html
<link href="https://unpkg.com/vuetify/dist/vuetify.min.css" rel="stylesheet">
Which makes using recommended Webpack method a bit hit and miss.
https://next.vuetifyjs.com/getting-started/quick-start#existing-applications
Use import 'vuetify/dist/vuetify.min.css'
or require('vuetify/dist/vuetify.min.css')
or import(/* webpackMode: "eager" */'vuetify/dist/vuetify.min.css')
to load the css in your primary chunk, or you can use extract-text-webpack-plugin (or import directly into your sass/stylus entry) to load it in a separate css file.
Thank you @KaelWD 馃憤 it works. Really appreciate your help!
I was following the current documentation for 0.17 which says:
// index.js or main.js
import('path/to/node_modules/vuetify/dist/vuetify.min.css') // Ensure you are using css-loader
not sure if you want to change it / make remarks.
Thanks again. 馃憤
Thanks for the heads up, that's quite clearly incorrect on our part.
Most helpful comment
https://next.vuetifyjs.com/getting-started/quick-start#existing-applications
Use
import 'vuetify/dist/vuetify.min.css'or
require('vuetify/dist/vuetify.min.css')or
import(/* webpackMode: "eager" */'vuetify/dist/vuetify.min.css')to load the css in your primary chunk, or you can use extract-text-webpack-plugin (or import directly into your sass/stylus entry) to load it in a separate css file.