Unable to bind DataGridTemplateColumn.SortMemberPath to an instance of an array

[cornerbowlsoftware]

Describe the bug

In WPF I am able to assign an instance within an array to the DataGridTemplateColumn.SortMemberPath, however, in Avalonia this does not work. The sample code causes the sort arrow to no longer display and sorting to be ignored:

            var clm = new DataGridTemplateColumn()
            {
                Header = name,
                SortMemberPath = $"{nameof(MyCoreClass.Values)}[{i}]",
                CellTemplate = template,
            };

I have attached a sample program that exposes the bug.

SortMemberPathBug.zip

To Reproduce

Run the sample program. Click on each of the 4 column headers. Notice the first three do not sort, however the last hard coded column sorts.

Expected behavior

The SortMemberPath should correctly sort the rows.

Avalonia version

11.1.0

OS

No response

Additional context

No response