Position is not irregular increments

Topics: HTML5 web, Windows 8 JavaScript, Windows 8 Xaml, Windows Phone 8
Jul 3, 2014 at 3:27 AM
When I Play ,The Position change is not (for example) 1,2,3,4,5,6 but 1,2,4,5,4,6.....
This is irregular increments

Do you have anything on Microsoft's official documentation describes this question?
can you Give me a link?