https://drafts.csswg.org/ is broken (again)

Dupe of #6528, I know. I would have commented there, but GitHub doesn't let me. :)

I don't know how this works internally, but perhaps the site regeneration scripts could be allowed to finish before swapping out the old content?

For anyone else missing the drafts, you can find them in the Wayback Machine over on archive.org. :)