Remove sticky header on grouped ListView - xaml

Question

I am developing a Windows Phone 8.1 Runtime app and I'm using ListView with only the GroupStyle and its HeaderTemplate set.
Everything works fine, except I need to disable the sticky header which is always on top while scrolling through the list, but I can't find which template I need to edit to completely disable the sticky header. And one thing that really bothers me is when I navigate away from the page, the current header disappears and a blank appears on the same spot.
The code is simple:
<CollectionViewSource
x:Key="cvs"
IsSourceGrouped="True"
ItemsPath="GroupItems"
Source="{Binding Categories}">
</CollectionViewSource>
in the Resource,
and the ListView:
<ListView
x:Name="ListView"
IsSwipeEnabled="False"
ItemTemplateSelector="{StaticResource AllGamesViewTemplateSelector}"
ItemsSource="{Binding Source={StaticResource cvs}}"
SelectionMode="None"
ShowsScrollingPlaceholders="True">
<ListView.GroupStyle>
<GroupStyle HeaderTemplate="{StaticResource AllGamesViewCategoryTemplate}"/>
</ListView.GroupStyle>
</ListView>
So my question is how to disable sticky headers on grouped ListView?

Answer 1

I had the same question and finally came across this: https://msdn.microsoft.com/en-us/library/windows/apps/windows.ui.xaml.controls.itemsstackpanel.arestickygroupheadersenabled?f=255&MSPPError=-2147217396
Set the AreStickyGroupHeadersEnabled property in the ListView's ItemsPanelTemplate.
<ListView
x:Name="ListView"
IsSwipeEnabled="False"
ItemTemplateSelector="{StaticResource AllGamesViewTemplateSelector}"
ItemsSource="{Binding Source={StaticResource cvs}}"
SelectionMode="None"
ShowsScrollingPlaceholders="True">
<ListView.GroupStyle>
<GroupStyle HeaderTemplate="{StaticResource AllGamesViewCategoryTemplate}"/>
</ListView.GroupStyle>
<ListView.ItemsPanel>
<ItemsPanelTemplate>
<ItemsStackPanel AreStickyGroupHeadersEnabled="False"/>
</ItemsPanelTemplate>
</ListView.ItemsPanel>
</ListView>

Answer 2

You should be able to wrap the ListView in a ScrollViewer to prevent the sticky headers.

Answer 3

One solution that comes to mind is not using grouping in the ListView, just simulating it. Create a collection that will hold the items for the groups and placeholder items representing the headers. Then use a template selector for the ListView to render the placeholder items as headers.