I got it working, and yes, get_avatar was the key. Basically it was the following line a code within the php file responsible for creating the element on the posts page.
$output .= '<div class="the-avatar">' . get_avatar( $post->post_author, 80 ) . '</div>'; where as 80 is the pixel size of the avatar 🙂
We seemed to have fixed the issue by disabling the plugin “Metabox Field Tabs” on our site. Seems to be a compatibility problem between these two.
Didn’t work for me. Replaced with https://plus.google.com/share?url= and I still get a popup and instant-close.
Did this ever get fixed or figured out?
