If you add CSS via Nuxt config, that CSS is minified and inlined into the page head. Component CSS/SCSS is inlined after the Nuxt config global CSS, but not minified.
All inline CSS should be minified (both global via Nuxt config, and component CSS).
Only global (Nuxt config) CSS is being minified.
I really don't think a reproduction link should be required. It should be strongly encouraged, but it's often unnecessarily onerous.
Reporting bugs should be easy and quick.