When implementation "RadGridView", it does ( or we use) "RowIndicatorVisibility="Collapsed" .
And it was dispalyed 1000 of data.
We selected the five hundredth of data and we scrolled up
to the upper of the document in pressing the arrow key ↑ on my keyboard.
In that case , it can be scrolled up and down but it's not work on Row Selection.
What do you think of this error ? Please give us your opinon and solution for this error.