postcss does not work as expected with vue-loader #1395
Description
Version
15.4.0
Reproduction link
Steps to reproduce
Clone https://github.com/JounQin/test and checkout branch vue-loader, run yarn build and check dist/main.*.css file, it is minified. Change code back to Vue style version and run yarn build again, dist/main.*.css is not minified correctly.
What is expected?
dist/main.*.css should be minified.
What is actually happening?
dist/main.*.css is not minified.