שינוי ה-Oneboxing משנה את כתובת ה-URL?

It looks like the URLs in the OP are no longer oneboxable (no opengraph tags on the site). But just noting for the record, this issue should have been resolved by

https://github.com/discourse/discourse/commit/f0a02525267e88986581be1f87c9e5608b9a4377