Recommended Browsers - JS errors prevents the page to load in Firefox

This page links from a https://8x8.vc chat:
https://web-cdn.jitsi.net/meet8x8com_3902.619/static/recommendedBrowsers.html

When opening in Firefox DevEdition 77.0b8 on macOS the page is blank and the following errors appear

Can someone point me in the right direction where to post this bug?