I can no longer reproduce this. * about:accounts correctly shows the "Get started" page. Clicking the "Get started" button then shows the server-supplied <noscript> content (a bit ugly, not localized, but it is there) * about:accounts?action=signin immediately shows the server-supplied <noscript> tag (and I suspect all supported action= querystrings will show the same). We probably need a different bug to make the <noscript> content prettier and able to be localized, but I think we close this.
This is WFM as in comment #1