Twitter Cards don't render in Tweets


#1

I am not sure if others are facing this issue, but here is something that is a bit strange with Twitter Cards. The Validator shows perfect card preview of URL, but the same is not rendered when seen in a Tweet.

Page: http://www.wishberg.com/beingpractical/wish/384318965447582079
Tweet: https://twitter.com/beingpractical/status/340031112493543425

While here is another Twitter card that is rendered correctly: https://twitter.com/beingpractical/status/339658695069794304

Am I missing something here? Please suggest. Thanks