I am reporting a button-sizing issue in Telerik UI for .NET MAUI RadCollectionView on iOS. A recycled item displays the correct button text but can retain the width allocated for the previous item’s longer text.

Environment

• Telerik UI for .NET MAUI 15.0.0; also reproduced with 14.1.0.
• .NET 10, Microsoft.Maui.Controls 10.0.80.
• Platform: iOS.
• No exception or error code accompanies the layout failure.

Reproduction sample:  CollectionViewButtonSizingRepro.zip 

The sample displays Telerik  RadCollectionView  and the built-in MAUI  CollectionView  side by side. Both use the same item template: Grid → Telerik RadButton, with no button width request. Each collection has independent data.

Telerik uses automatic item length ( ItemLength="-1" ); MAUI uses  MeasureAllItems . There are no custom handlers, manual recycling, or layout workarounds.

Steps to reproduce

1. Launch the sample on iOS. All buttons initially display Download.
2. Tap several buttons in the Telerik pane. Their text changes to Downloaded, requiring a wider button.
3. Scroll those rows completely out of view and continue through untouched Download items. Try both continuous scrolling and scrolling with pauses.
4. Repeat independently in the MAUI pane.

Expected: After recycling, each button is sized for its current text and image.

Actual: In the Telerik pane, a Download button can retain the wider allocation from the previous Downloaded state, leaving incorrect spacing. The same template does not reproduce the issue in the MAUI CollectionView pane. Upgrading to Telerik 15.0.0 does not resolve it.

Earlier diagnostics in our original application showed correct fresh button measurement after rebinding, but a stale arranged width without a corrective child arrangement when the footer’s bounds remained unchanged.

Thanks,

Mingxiao Ye

Provide support to display highlight annotation in the PDF Viewer. Currently, the highlight color is displayed but the text is missing.

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tth:mm or h:mmtt 

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If you want to keep the US culture but want to use the 24h time format, the TimePicker does not apply the format, it still uses 12h time format.

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When using the RadCollectionView the loaded items are no longer displayed. 

When the ObservableCollection of the items is completely reconstructed and reassigned the display works.

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Exception.Message= Object reference not set to an instance of an object.

   at Telerik.Maui.Data.PropertyInfoFieldInfo.GetValue(Object item)
   at Telerik.Maui.Controls.DataGrid.CellsController`1.GetCellModel(IItemInfoNode parentRow, ItemInfo columnItemInfo, Int32 rowLine, Int32 columnLine, Boolean& preparedModel)
   at Telerik.Maui.Controls.DataGrid.CellsController`1.GenerateCellsForRow(IItemInfoNode rowModel, Int32 rowSlot)
   at Telerik.Maui.Controls.DataGrid.NodePool`2.GenerateModelsForInfos(IList`1 itemInfos, ModelGenerationContext modelGenerationContext, MeasureContext measureContext)
   at Telerik.Maui.Controls.DataGrid.NodePool`2.MeasureForward(MeasureContext& context)
   at Telerik.Maui.Controls.DataGrid.NodePool`2.MeasureVertically(RadSize availableSize, Double offset, Double verticalBuffer)
   at Telerik.Maui.Controls.DataGrid.NodePool`2.OnMeasure(RadSize availableSize, Double offset, Double verticalBuffer)
   at Telerik.Maui.Controls.DataGrid.GridModel.MeasureCells(RadSize availableSize)
   at Telerik.Maui.Controls.DataGrid.DataGridContentLayout.MeasureChildren(Double widthConstraint, Double heightConstraint)
   at Microsoft.Maui.Platform.MauiPanel.MeasureOverride(Size availableSize)
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Steps to reproduce
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Hi Team,

I would like to be able to have client-side filtering/sorting/grouping capabilities for large backend datasets that cannot be entirely loaded on the client.

As it stands now, the DataGrid (and other data components) can only operate on the data that is has in the local DataView. This means that I need to build a custom filtering solution that prefilters/presorts the backend data before paging and loading it into the DataGrid.

To accomplish the "full view", we need a data layer that understands both the UI as well as the backend. The Telerik UI for WPF product has an excellent solution for this, known as the WPF EntityFrameworkCoreDataSource - Overview - Telerik UI for WPF and the WPF DataServiceDataSource - Overview - Telerik UI for WPF.

If such a feature can be added to Telerik UI for MAUI, it would be an excellent bonus for the component suite in data heavy applications.

Thank you,

Peter

 

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