fluentui v9 links default styling and Success Criterion 2.4.7 Focus Visible

[nikki9696]

Hi friends,

My QA tester is insisting links must have a border around them (a box) to pass Success Criterion 2.4.7 Focus Visible. The fluent default for v9 Links is to have focused links have a double underline. I am arguing with him that this passes the criteria and he's busy looking at the Examples section here https://www.w3.org/WAI/WCAG21/Understanding/focus-visible.html

Can someone clarify for me if this is a Fluent bug for accessibility? Either I or my QA person needs to have better understanding of how to read the success criterion - it is me or him? =)

Thanks!