Windows Phone 7, Back Button Behavior

Windows Phone 7, Back Button Behavior

I have my mobile site up and running with various people testing.  I don't really "care" about Windows users, but was surprised when I got a 2 thumbs up from one of them.

However, it was short lived as about 30 minutes later I got an e-mail stating that when he presses the back button (not the browser back button, but a jQM one) it doesn't go back a page it goes back to the previous website.

I saw this patch and was wondering if this is the reason it doesn't work?  I don't have a problem telling this user they need to look at something else.