We had an interesting conversation over on Telegram, regarding another Brave issue. This time, Brave was not recognizing the keyring/password, so for some external links, would voluntarily append
/–password-store=basic
to the end of those URLs. That produced an “Oops! That page can’t be found”, empty page.
That’s a strange Brave issue, and the keyring problem explains why links were breaking. Good to know that uninstalling and reinstalling Brave fixed it.