On my site aptsonic.com when you attempt to share an article from an iPhone the share popup for Facebook and Pinterest render half off of the screen so much so that they are unusable.
If the phone is horizontal the facebook share popup is usuable, but the pinterest share screen still renders half off of the screen.
I am using Wordpress 3.4.1 and WPtouch Pro 2.7.3
Screen shots are available.
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