CSS Nesting Syntax Not Working

[CaperAsDev]

Hi,

This is my first time reporting an issue, so I hope this is the right place to do it.

Issue:
After including compress in my project, I noticed that some styles using CSS nesting syntax stopped working. I tried setting CSS to false in the integration config, but it didn't resolve the issue. Eventually, I removed the integration, and the styles worked correctly again.

This is just an example of some of the nesting styles that did't work.