If you view the below on mobile, the embedded tweets timed at 20:59 & 19:51, the right side of the image gets cut off.
If you then view the page in landscape the tweet + image resizes correctly showing the full image. Then if you view the page back in portrait the tweet + image resize correctly.
Its only on first load viewed in portrait that the tweet + image does not resize correctly.
This issue has been seen on iPhone 4/5 iOS 6/7.