When a ComboBox editor is open in the DataGrid, one can use the arrow keys to go up and down the items of the combo in order to make a selection. When pressing Enter it is expected that the ComboBox gets closed and the DataGrid is still in edit mode for the same cell.

However, when the Enter is pressed - the ComboBox closes and the next row goes into edit mode - this behavior is erroneous.

 The following null reference exception occurs inside the CanLoadMoreItems method

Object reference not set to an instance of an object

   at Telerik.Maui.Controls.DataGrid.GridModel.CanLoadMoreItems()
   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)

For the distinct values, there is a bool property that allows you to hide the distinct values: ShowDistinctValuesFilter. 

Expose similar way for the Show Rows with Values options

Keyboard navigation to editable cells does not retain text selection. Having the SelectionOnFocus to “SelectAll” and the cell is in edit mode, the text gets selected

pressing enter or tab key, the text in the next cell is not selected.

I have tried implicit style, cell edit templates, same result, text gets deselected.

when changing property value programmatically, the row background style selector does not apply. You need to scroll the data or resize the control, then the change applies.

The selector works when editing the datagrid value trough the UI, but does not work when changing the value programmatically.

having a datagrid with columns and setting the celleditor style to text column, then setting SelectionOnFocus to some value, then enter the edit mode, for example select all or cursor at start do not apply., always cursor at end applies.

The behavior also happens when using CellEditTemplate and there is RadEntry in it. The SelectionOnFocus does not apply.