Update
The upgrade to Beta3 seems to have eliminated the issue for most users who were reporting problems. Fingers crossed!
re: Proxies/Setup
Using Cloudflare 1.1.1.1 for my network DNS, but nothing custom otherwise.
I was wondering if it could be add-blocker related – some people reported it working fine in Chrome Incognito but not without, for example.
Still scratching my head…