Considering a URL: https://example.com/你好/:

const url = new URL('https://example.com/你好/');
url.href;
// "https://example.com/%E4%BD%A0%E5%A5%BD/"
url.pathname;
// "/%E4%BD%A0%E5%A5%BD/"

But during wrangler publish, the file will be stored using original name in Workers KV:

Thus the url.pathname should be decodeURI before being used as rawPathKey.

This should be considered as a critical bug (It will cause every non-ascii URL path to be 404) and an emergency fix should be released.