Commented Issue: LongListSelector.SelectedItem binding not working [9360]

Hello

Im using Silverlight for Windows Phone Toolkit August 2011 release. I have a LongListSelector which is displaying grouped "Programs". The SelectedItem binding does not seem to work. Is not SelectedItem possible for no flat LongListSelector?

I have this XAML:

<toolkit:LongListSelector
IsFlatList="False" Grid.Row="4"
Visibility="{Binding CategoriesVisibility, Converter={StaticResource InvertVisibilityConverter}}"
ItemsSource="{Binding Programs}"
SelectedItem="{Binding SelectedProgram, Mode=TwoWay}"
ItemTemplate="{StaticResource categoryItemTemplate}"
GroupHeaderTemplate="{StaticResource groupHeaderTemplate}"
GroupItemTemplate="{StaticResource groupItemTemplate}" >
<toolkit:LongListSelector.GroupItemsPanel>
<ItemsPanelTemplate>
<toolkit:WrapPanel/>
</ItemsPanelTemplate>
</toolkit:LongListSelector.GroupItemsPanel>
</toolkit:LongListSelector>

In my ViewModel:

private Group<Program> selectedProgram;
public Group<Program> SelectedProgram
{
get { return selectedProgram; }
set
{
selectedProgram = value;
RaisePropertyChanged("Selection");
}
}
Comments: ** Comment from web user: scottie7 **

This still happen on Windows Phone Toolkit Nov 2011.