How to prevent a ListView from scrolling to the beginning at the ItemsSource update?

[gogolon]

Hello,
My ItemsSource is a list containing always the same objects, but I sometimes change their order and set the ItemSource again (to refresh the listview). After doing so, the listview scrolls to the first item. I tried setting the CurrentIndex property to the index before update, but it doesn't work. How to keep the same CurrentIndex regardless of refreshments?
[EDIT]: This only happens on Android, so I think this might be a bug.