Facebook Page Plugin not scrolling in Safari?

Just created a new Facebook feed for a site using their ‘Page Plugin’ tool:

http://ift.tt/1HTwNuG

For some reason once the code is generated and on the website for example:

http://ift.tt/1yByE89

When viewing the page on Safari (7.1.5) on the mac (Mavericks) and iOS Safari (8.2) users are unable the scroll the feed.

Any idea why this is?