When using ImageButton inside a CellTemplate, the image does not display initially. When you resize the window image is displayed. 

 

Workaround:

Use Image instead of ImageButton

 

When DataGrid is grouped and applying filtering, aggregates footer appears in the cells

expand a row and collapse it. Or expand a few rows, scroll around a bit, and then collapse one. You can get into some weird situations. Gray background over the group, row background and alternate styles are reset. 

Some data is missing from the UI when grouping is applied and then filter the data. 

If you ungroup, the items are displayed.

Starting with v10, all groups except the last, get a blank, empty row.

If you toggle off the grouping, the empty rows go away, but once you put the grouping on, these empty rows show up again.

Keep the data grouped, make the window a bit smaller so you have a decent amount of rows to scroll through, and using your mouse wheel, scroll up and down quickly. Eventually you'll notice that the grid will start to bounce a bit. For example, you'll scroll down and then without scrolling the mouse wheel up at all, it'll jump back up a few rows on its own.

Begin editing the first cell firs column
Without closing the cell editor, scroll down to the last cell, the first cell should exit the viewport.
Start editing the last cell.
Scroll back up to the first cell

The content inside the first cell is missing.

The content should be there.

 I need to change the size of the DataGrid scrollbars to be wider and customize their color.

Provide an event that occurs when the content in the DataGrid is drawn. 

when loading same page without navigating to another page, there are some left instances of the DataGrid and the memory increase. 

I want to strikethrough the text in  the row based on a value. 

i checked and the column cell content style DataGridTextCellAppearance class does not expose such property.

For example we have set RowHeight to 26 with GridLineThickness = 1, GridLinesVisibility = Horizontal, and RowBackgroundStyle and AlternateRowBackgroundStyle with BorderThickness = 0.

The first row is 26px, the middle rows are 25px and the last row is 24px. So it seems the grid lines are included in the calculation of the RowHeight. 

You can tab into the datagrid, but can't tab out of the data grid (focus trap)

In the current DataGrid implementation, the DataGrid will start with all the groups expanded. The only way to have any form of preference is to programmatically interact with the DataView after data is presented in the control  https://docs.telerik.com/devtools/maui/controls/datagrid/grouping/expand-collapse 

Requested Feature
A better approach that I am requesting a feature for is to have a property available for the DataGrid that sets this value ahead of time.

For example, you could add it as a BindableProperty on the GroupDescriptor class and on the GroupDefinition is to have an IsExapanded property.

Navigating to a DataGrid that is placed on third page first time the control displays when navigating to the third page. When navigating back to the second page and then go back to the third page the control do not display. 

On net 8 works as expected, the issue happens on net 9 and singleton approach is used.

Provide an option to expose the AggregateError as a string and an option to customize the error through localization.

We need an API through which we can get the currently visible in the viewport items. The API should take into account operations like sorting, filtering and grouping.

Currently when the typed DataGrid columns (all columns except TemplateColumn) do not have a PropertyName/DataMemberBinding applied, a misleading exception is thrown and it is difficult to find out what is causing it.

In Telerik WinForms GridView there is a Row number feature: https://docs.telerik.com/devtools/winforms/controls/gridview/visual-elements/cells/formating-examples/row-numbers 

Having a DataGrid inside RowDetails. When sorting the control, the control does not resize as expected. 
working on WinUI.