Social Marketing: sharing via Tweet on iPhone does not redirect back to coupon code.

When sharing via Twitter with the Social Marketing plugin on an iPhone, once you've tweeted the link you are not redirected back to the page with the popup and coupon code.

You have to click the 'return to previous site' link in Twitter which takes you to the original page but with no popup or coupon code.

I've not tested it yet with the other 3 social networks but I will.