CSS code-splitting is broken by Rollup's PR #4104 (Rollup v2.50.2)

[AurelienStebe]

This is more of a "heads up" kind of ticket, see all details here : rollup/rollup#4130

I don't know where the fix will be needed, but I suspect in Rollup. You might want to document it anyway.

While I'm here, thanks a lot for this project, it is quite the step forward from "rollup-plugin-postcss". 👍
A fresh release with CSSnano v5 and PostCSS v8 would be great, but you might want to wait and see what Rollup says about the regression above (hence the "heads up").

[AurelienStebe]

Rollup released a fix, so CSS code-splitting was broken between v2.50.2 and v2.51.2.

A new release with CSSnano v5 and PostCSS v8 would still be great, but I'll close this ticket.