When working in Windows with multiple monitors that have different display scales - dragging a window that contains a DataGrid with frozen columns would often lead to the frozen columns not getting rendered correctly. The frozen columns seem to not take into account the Dpi of the new monitor, but of the old one.

A scenario with a requirement to display information about the entire group, including recursively all child groups, needs access to the actual items and/or subgroups. Exposing these and parent info would allow for greater flexibility in displaying custom information in group headers.

A NullReferenceException is thrown during the measure phase of a DataGridTextColumn when a CellRenderer is applied:

Object reference not set to an instance of an object.
   at Telerik.Maui.Controls.DataGrid.DataGridColumn.MeasureDrawingPaintable(LambdaPaintable lambdaPaintable, Object measureContext)
   at Telerik.Maui.Controls.SkiaSharp.SkiaLambdaPainter.Measure(MeasureablePaintable paintable, PurePainterContext context, Double widthConstraint, Double heightConstraint)
   at Telerik.Maui.Controls.DataGrid.MasterArranger.MeasureNodeContainer(Object container, Double widthConstraint)
   at Telerik.Maui.Controls.DataGrid.MasterArranger.MeasureNodeContainer(Object container, Double widthConstraint)
   at Telerik.Maui.Controls.DataGrid.MasterArranger.MeasureGridCellModel(GridCellModel model)
   at Telerik.Maui.Controls.DataGrid.CellModelGenerator.GetSize(GridCellModel decorator)
   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.Measure(Double widthConstraint, Double heightConstraint)
   at Microsoft.Maui.Platform.MauiPanel.MeasureOverride(Size availableSize)
   at ABI.Microsoft.UI.Xaml.IFrameworkElementOverrides.Do_Abi_MeasureOverride_0(IntPtr thisPtr, Size availableSize, Size* result)

Currently, the PropertyGroupDescriptor in the DataGrid component does not support grouping by nested properties (e.g., Customer.Address.City). Enhance the PropertyGroupDescriptor to support nested property paths, allowing developers to group data based on sub-properties within complex objects. This would align with common data-binding patterns and improve the flexibility of the DataGrid for real-world scenarios involving nested data models.

When the CollectionView is grouped and an element is removed from the source collection and inserted again immediately after that, it results in its parent group not expanding/collapsing when tapped. The tap is registered and the visual indicator of the group state is changed but the group is not actually collapsing and expanding. This issue is happening for groups with only one child item. When scrolling so the group gets our of the visible area and then scroll to the group again, the collapse/expand functionality works.

When a column in the DataGrid is being resized and is subsequently scrolled out of the viewport, a NullReferenceException is thrown. This happens because the column's model is recycled while the resize operation is still in progress. As a result, the resize logic attempts to access a column from a recycled (and now null) model, leading to the exception.

I would like to use a mouse to drag a row to a new spot in row order.

Found this info for WinForms, but not finding anything for MAUI RadDataGrid

https://docs.telerik.com/devtools/winforms/knowledge-base/gridview-drag-drop-bound-mode 

https://docs.telerik.com/devtools/winforms/controls/gridview/end-user-capabilities/reordering-rows 

An ArgumentException is thrown in the DataGrid when updating a property that exists only on a derived type of an object used in the grid's data source. This occurs specifically when a DelegateAggregateDescriptor is applied to a column.

When the client picks a random item from the ItemSource and changes the value of its property for which a GroupDescriptor is set, the CollectionView crashes.

Please add support for multiple row column headers. As an example of what I'm referring to, see the Telerik UI for Blazor implementation here => Blazor DataGrid Demos - Multi-Column Headers | Telerik UI for Blazor

the text in the spinner wraps when scrolling the spinner. 

The issue happens in Time, TimeSpan, Date and DateTime pickers with day, month, hour spinners. 

The issue happens in maui 9.0.60 and 9.0.70 versions.

It works with maui 9.0.50 and lower versions 

In MAUI CollectionView when scrolling an item into view, the exact position of the item after the scroll has completed can be specified with the position argument of the ScrollTo methods.

Please provide such option for Telerik MAUI CollectionView inside the ScrollItemIntoView method.

Define tooltip text for toolbar items similar to ImageEditor and RichTextEditor

Build template for project with navigation: like menu, flyout.

It will help user to get started.

Appointments are not rendered accurately when scrolling through the time ruler and using appointment template selector and custom appointments

When UseWindowSoftInputModeAdjust to Resize and keyboard closes, the CollectionView does not scroll.

Provide an AI assistant for code generation with the Telerik MAUI controls. 

Telerik Blazor released such assistant https://www.telerik.com/blazor-ui/documentation/ai/overview 

Provide a search option in the TreeView similar as in the DataGrid. 

When searching on loaded data it will highlight the items(folders, files) like in data grid.

I think filter is a separate feature that to implement together.

Take into account when filtering not to loose the selections that user done and can remove during the filter process from collection view.

provide support for right to left flow direction. 

When having a waterfront image in the document, it is displayed as a foreground element.