Describe the bug
CollectionView scrolling stutters on Android when any layout container (Grid, VerticalStackLayout, Border, ContentView) is used as the DataTemplate root. A bare Label as the DataTemplate root scrolls perfectly smoothly with the same data and item count.
This has been reproduced in a brand new empty MAUI app with no custom code, no ViewModel, no EF, no custom controls — just a CollectionView with 400 strings.
Minimal Reproduction
✅ SMOOTH:
<CollectionView>
<CollectionView.ItemsSource>
<x:Array Type="{x:Type x:String}">
<!-- 400 strings -->
</x:Array>
</CollectionView.ItemsSource>
<CollectionView.ItemTemplate>
<DataTemplate>
<Label Text="{Binding .}" />
</DataTemplate>
</CollectionView.ItemTemplate>
</CollectionView>❌ STUTTERS:
<CollectionView>
<CollectionView.ItemsSource>
<x:Array Type="{x:Type x:String}">
<!-- 400 strings -->
</x:Array>
</CollectionView.ItemsSource>
<CollectionView.ItemTemplate>
<DataTemplate>
<Grid>
<Label Text="{Binding .}" />
</Grid>
</DataTemplate>
</CollectionView.ItemTemplate>
</CollectionView>All of the following container types were tested as the DataTemplate root — all stutter:
GridVerticalStackLayoutBorderContentView
Steps to Reproduce
- Create a new blank MAUI app targeting net10.0-android
- Add a CollectionView to the main page with 400 string items
- Set DataTemplate root to
<Grid><Label .../></Grid>
- Run on Android device or emulator and scroll
Expected behavior
Scrolling should be smooth regardless of whether the DataTemplate root is a leaf element or a layout container, as long as the layout is simple.
Actual behavior
Scrolling stutters noticeably when any container wraps the root element. The stutter scales with complexity — 10 Labels inside a Grid is significantly worse than 1.
Versions
Microsoft.Maui.Controls: 10.0.70- Workload version: 10.0.300-manifests.e0989437
- Android workload: 36.1.43/10.0.100
- .NET SDK: 10.0
- Visual Studio: 18.7.11811.120
Devices affected
- Android Emulator ✅ reproduces
- Samsung S24 (real hardware) ✅ reproduces
The issue is 100% reproducible in a clean new app with zero dependencies.
My actual app is using Sqlite,EF core, Generics etc.
My actual code looks like this: (Just for reference)
<KContentPage
x:Class="Keeper.UI.Views.EncountersView"
xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
Title="Encounters"
x:TypeArguments="EncountersViewModel"
EditTarget="{x:Type EncounterView}"
PageType="List">
<KContentPage.Resources>
<NullOrEmptyConverter x:Key="NullOrEmptyConverter" />
</KContentPage.Resources>
<Grid Padding="0" RowDefinitions="auto,*">
<KSearchBar Placeholder="Search doctor" Text="{Binding Request.SearchText}" />
<KCollectionView Grid.Row="1" ItemsSource="{Binding Items}">
<KCollectionView.ItemTemplate>
<DataTemplate>
<KBorder>
<Grid ColumnDefinitions="60, *, 150" Style="{StaticResource ListItemStyle}">
<KRoundWidget
Grid.Column="0"
IconGlyph="{Binding EncounterDate, StringFormat='{0:dd MMM}'}"
ShowText="True"
SubTitle="{Binding EncounterDate, StringFormat='{0:MMM}'}"
TextLimit="2"
VerticalOptions="Center" />
<VerticalStackLayout Grid.Column="1" VerticalOptions="Center">
<KLabel LabelText="{Binding DoctorName}" Type="Title" />
<KLabel IconGlyph="{x:Static KMaterialIcons.CalendarToday}" LabelText="{Binding EncounterDate, StringFormat='{0:dd MMM yyyy}'}" />
<KLabel IconGlyph="{x:Static KMaterialIcons.MedicalServices}" LabelText="{Binding ReasonForVisit}" />
</VerticalStackLayout>
<VerticalStackLayout
Grid.Column="2"
HorizontalOptions="End"
VerticalOptions="Center">
<KLabel
IconColor="DarkGreen"
IconGlyph="{x:Static KMaterialIcons.BloodPressure}"
LabelText="{Binding BP, Converter={StaticResource NullOrEmptyConverter}, ConverterParameter='Not recorded'}" />
<KLabel
IconColor="Orange"
IconGlyph="{x:Static KMaterialIcons.OxygenSaturation}"
LabelText="{Binding SpO2, Converter={StaticResource NullOrEmptyConverter}, ConverterParameter='Not recorded'}" />
<KLabel
IconColor="Purple"
IconGlyph="{x:Static KMaterialIcons.Thermometer}"
LabelText="{Binding Temp, Converter={StaticResource NullOrEmptyConverter}, ConverterParameter='Not recorded'}" />
</VerticalStackLayout>
</Grid>
</KBorder>
</DataTemplate>
</KCollectionView.ItemTemplate>
</KCollectionView>
</Grid>
</KContentPage>```
Describe the bug
CollectionView scrolling stutters on Android when any layout container (Grid, VerticalStackLayout, Border, ContentView) is used as the DataTemplate root. A bare Label as the DataTemplate root scrolls perfectly smoothly with the same data and item count.
This has been reproduced in a brand new empty MAUI app with no custom code, no ViewModel, no EF, no custom controls — just a CollectionView with 400 strings.
Minimal Reproduction
✅ SMOOTH:
❌ STUTTERS:
All of the following container types were tested as the DataTemplate root — all stutter:
GridVerticalStackLayoutBorderContentViewSteps to Reproduce
<Grid><Label .../></Grid>Expected behavior
Scrolling should be smooth regardless of whether the DataTemplate root is a leaf element or a layout container, as long as the layout is simple.
Actual behavior
Scrolling stutters noticeably when any container wraps the root element. The stutter scales with complexity — 10 Labels inside a Grid is significantly worse than 1.
Versions
Microsoft.Maui.Controls: 10.0.70Devices affected
The issue is 100% reproducible in a clean new app with zero dependencies.
My actual app is using Sqlite,EF core, Generics etc.
My actual code looks like this: (Just for reference)