Controls on Pivot disappear
Solution 1:
Quite old question, but still unanswered.
It seems like it's because of Application_Deactivated event handler, which runs when application is sent to background:
private void Application_Deactivated(object sender, DeactivatedEventArgs e)
{
diagLog("Deactivated, reason: " + e.Reason);
}
In this event handler you should set RunningInBackground = true
Hope that helps