If I put this in my .mdx file:

<Card
  title="Invalid Link"
  href="https://an-invalid-url.com"
>
  Some text
</Card>

then lychee correctly reports the error.

However, if it appears in a nested structure:

<CardGroup cols={1}>
  <Card
    title="Invalid Link"
    href="https://an-invalid-url.com"
  >
    Some text
  </Card>
</CardGroup>

then lychee fails to check the URL and incorrectly reports success.

I'm using lychee 0.21.0 on Mac OS 15.