Windows Phone Listpicker crash with lumia 1520 - windows-phone-8

Question

One of my user has problem with the listpicker.
The problem is only happen with his lumia 1520 (and I think also with other phone with that resolution but I can't test it).
The listpicker crash when the user tap on it and it goes to full mode display in order to select the item.
Here is the stack trace:
Frame Image Function Offset
0 system_windows_ni MS.Internal.XcpImports.CheckHResult 0x0019fe24
1 system_windows_ni MS.Internal.XcpImports.SetValue 0x00000056
2 system_windows_ni MS.Internal.XcpImports.SetValue 0x000004e4
3 system_windows_ni System.Windows.DependencyObject.SetObjectValueToCore 0x0000006c
4 system_windows_ni System.Windows.DependencyObject.SetEffectiveValue 0x0000002e
5 system_windows_ni System.Windows.DependencyObject.UpdateEffectiveValue 0x00000086
6 system_windows_ni System.Windows.DependencyObject.SetValueInternal 0x00000112
7 microsoft_phone_ni Microsoft.Phone.Controls.PhoneApplicationFrame.UpdateMargin 0x000001b8
8 microsoft_phone_ni Microsoft.Phone.Controls.PhoneApplicationFrame.InternalUpdateOrientationAndMarginForPage 0x0000006c
9 microsoft_phone_ni Microsoft.Phone.Controls.PhoneApplicationFrame.System.Windows.Controls.IFrame.InternalUpdateOrientationAndMarginForPage 0x00000020
10 microsoft_phone_ni System.Windows.Navigation.NavigationService.CompleteNavigation 0x0000016a
11 microsoft_phone_ni System.Windows.Navigation.NavigationService+__c__DisplayClass7._NavigateCore_StartNavigation_b__4 0x00000020
this is the xaml code for the listpicker:
<toolkit:ListPicker VerticalAlignment="Center" Grid.Column="1" Grid.Row="1" ItemsSource="{Binding Categories}" SelectedItem="{Binding Category, Mode=TwoWay}" />
and this is the style:
<Style TargetType="toolkit:ListPicker">
<Setter Property="FullModeItemTemplate">
<Setter.Value>
<DataTemplate>
<StackPanel Orientation="Horizontal" Margin="16 15 0 15">
<TextBlock Text="{Binding}"
Margin="0 0 0 0"
FontSize="{StaticResource PhoneFontSizeLarge}"
FontFamily="{StaticResource PhoneFontFamilyLight}"/>
</StackPanel>
</DataTemplate>
</Setter.Value>
</Setter>
</Style>
this is the page where there is the listpicker:
<local:MyPhoneApplicationPage
x:Class="EasyShopping.Views.Details.ProductDetailView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"
xmlns:local="clr-namespace:EasyShopping.Framework"
xmlns:cal="clr-namespace:Caliburn.Micro;assembly=Caliburn.Micro"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:toolkit="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone.Controls.Toolkit"
FontFamily="{StaticResource PhoneFontFamilyNormal}"
FontSize="{StaticResource PhoneFontSizeNormal}"
Foreground="{StaticResource PhoneForegroundBrush}"
SupportedOrientations="Portrait" Orientation="Portrait"
mc:Ignorable="d" d:DesignHeight="696" d:DesignWidth="480"
xmlns:vm="clr-namespace:EasyShopping.ViewModels.Details"
d:DataContext="{d:DesignInstance vm:SampleProductDetailViewModel, IsDesignTimeCreatable=True}"
shell:SystemTray.IsVisible="False">
<!--LayoutRoot is the root grid where all page content is placed-->
<Grid x:Name="LayoutRoot" Background="Transparent">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<!--TitlePanel contains the name of the application and page title-->
<StackPanel x:Name="TitlePanel" Grid.Row="0" Margin="12,17,0,28">
<TextBlock x:Name="ApplicationTitle" Text="{Binding Resources.AppNameTitle}" Style="{StaticResource PhoneTextNormalStyle}"/>
<TextBlock x:Name="PageTitle" Text="{Binding Resources.Product}" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/>
</StackPanel>
<!--ContentPanel - place additional content here-->
<Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="150" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<TextBlock Text="{Binding Resources.Name}" HorizontalAlignment="Center" VerticalAlignment="Center" Style="{StaticResource PhoneTextNormalStyle}"/>
<TextBox Grid.Column="1" Text="{Binding Name, Mode=TwoWay}" InputScope="Text" />
<TextBlock Grid.Row="1" Text="{Binding Resources.Category}" HorizontalAlignment="Center" VerticalAlignment="Center" Style="{StaticResource PhoneTextNormalStyle}"/>
<toolkit:ListPicker VerticalAlignment="Center" Grid.Column="1" Grid.Row="1" ItemsSource="{Binding Categories}" SelectedItem="{Binding Category, Mode=TwoWay}" />
<TextBlock Grid.Row="2" TextWrapping="Wrap" Text="{Binding Resources.DefaultMeasureUnit}" HorizontalAlignment="Center" VerticalAlignment="Center" Style="{StaticResource PhoneTextNormalStyle}"/>
<toolkit:ListPicker VerticalAlignment="Center" Grid.Column="1" Grid.Row="2" ItemsSource="{Binding QuantityTypes}" SelectedItem="{Binding QtaType, Mode=TwoWay}" />
</Grid>
</Grid>
<local:MyPhoneApplicationPage.ApplicationBar>
<shell:ApplicationBar IsVisible="True" IsMenuEnabled="True">
<cal:AppBarButton IconUri="/Images/save.png" Text="save" Message="Save" />
<cal:AppBarButton IconUri="/Images/cancel.png" Text="cancel" Message="Cancel" />
</shell:ApplicationBar>
</local:MyPhoneApplicationPage.ApplicationBar>
<toolkit:TransitionService.NavigationInTransition>
<toolkit:NavigationInTransition>
<toolkit:NavigationInTransition.Backward>
<toolkit:TurnstileTransition Mode="BackwardIn"/>
</toolkit:NavigationInTransition.Backward>
<toolkit:NavigationInTransition.Forward>
<toolkit:TurnstileTransition Mode="ForwardIn"/>
</toolkit:NavigationInTransition.Forward>
</toolkit:NavigationInTransition>
</toolkit:TransitionService.NavigationInTransition>
<toolkit:TransitionService.NavigationOutTransition>
<toolkit:NavigationOutTransition>
<toolkit:NavigationOutTransition.Backward>
<toolkit:TurnstileTransition Mode="BackwardOut"/>
</toolkit:NavigationOutTransition.Backward>
<toolkit:NavigationOutTransition.Forward>
<toolkit:TurnstileTransition Mode="ForwardOut"/>
</toolkit:NavigationOutTransition.Forward>
</toolkit:NavigationOutTransition>
</toolkit:TransitionService.NavigationOutTransition>
someone could help me?
thank you
Luca