Now, the tweet I gave as an example is somehow the only one working… Nothing older or newer works.
Another non-working example: https://twitter.com/VladoGames/status/386604346768494592
Could this be a cache issue? Maybe a Twitter support person refreshed the cache for that particular page? If it is possible to refresh Twitter’s cache of my pages myself like it is on Facebook, information on how to do that would be ideal.