I placed a grid on the page and created from WindowXP template. I config the grid with the following settings.
**********************************
FullRowMode = False
EnableKeyboardNavigation = True
AllowNewItem = True
**********************************
When user click a HTML button, it will trigger a event to delete an item in the grid. Here is the function that will be called after clicking button.

function Del_SalesInfo()
{
var gridObj = eo_GetObject("Grid5");
if (gridObj.getItemCount() > 0)
{
if (typeof(gridObj.getSelectedCell()) != "undefined")
{
gridObj.deleteItem(gridObj.getSelectedCell().getItemIndex());
}
}
}

At this moment, When I tried to move the cell by pressing the direction button on the keyboard, no highlight cell show on the screen.

Hi Support,
Your new bulid didn't solve the problem. I have PM you the URL for your testing. Thanks!

Hi Support,

The issue is fixed. Thanks a lot!