Commented Issue: Listpicker with Large lists lose consciousness [9940]

I have a panorama item with a number of listpicker controls to set application preferences that I am binding to a viewmodel. If i go out to another form (for a short time @15 seconds) and return, life is good. If I leave for about 30 seconds, the selected item disappears. This only happens on the listpicker with a large number of list items. (69).

anyone seen this?
Comments: ** Comment from web user: offbysome **

I've ran into similar issues. The ListPicker flat out does not work with longer lists and it a couple different kinds of odd behavior. To reproduce this, just try to use the ListPicker to pick from a list of countries (there are around 200). Sometimes picking an item will cause a blank screen and other times the textbox looking control doesn't get updated. I dumped the ListPicker and switched to a custom built control that uses the LongListSelector.