Polaris styles not being applied

[dlvx]

Hello,

I have a React app that uses Polaris. I'm migrated from v9 to v10 and the Polaris styles don't work anymore. I can see them in the browser inspector but they are not applied. They do work if I remove the --pc-box prefix.

I didn't find anything in the documentation related to this. My app is bundled using webpack if that helps.

How can I make these styles work?

Thanks!