Position fixed and -webkit-overflow-scrolling: tou

Question

I am using the css trick to make a site feel like an app in Cordova.

-webkit-overflow-scrolling: touch;

However, that breaks (disappear, bounce) my position:fixed elements. Any ideas on why?

FYI Safari on ios8 works great, the problem it's only when I create the app in cordova (UIWebVier).