Jetpack Sharedaddy buttons not working on posts loaded by javascript "Load More"

Hello Jetpack team,
I’m having a problem getting Jetpack 2.2.1’s sharing buttons to work correctly on my site.

The sharing buttons work well on all of the posts which are visible when the page is loaded.

Buuuut.. (there’s always a but) the site has a masonry / Pinterest-look theme which loads additional posts to the home page when users click on the “Load More” button at the bottom of the page.

The sharing buttons show up on the posts loaded by the Load More button, but they don’t function correctly (nothing happens when you hover over the Share button).

You can see the problem on http://www.whatsfortea.net.nz . I’ve disabled all non-Jetpack plugins to make sure that’s not an issue.

I don’t really know what’s happening but I’m guessing clicking the Load More button calls a jQuery function to load more posts, but this function doesn’t communicate with Sharedaddy properly in the way the initial page load does.

Any help would be hugely appreciated as I would love to get the Jetpack sharing feature working – it is really cool!

Thank you