New workaround: paste the article title into archive.is. I don't know what they're doing but they have a workaround of some sort.
I actually made a bookmarklet with the following pasted into the URL, so you can do it in a single click:
javascript:void(open('https://archive.is/?run=1&url='+encodeURIComponent(document....)
I've used them to save Facebook posts before, and the pages were logged in to some "Nathan" IIRC. They probably have a bunch of hacks for specific sites that needed fixing.