We have a DG2 with a sidebar on the right that listens to the grid, grid has single select with row click
The user cannot use the keyboard to navigate between grid lines and adjust the selection.
This works when checkbox selection is used as the checkbox itself can receive focus. But we use checkbox selection for multi-select only.
Keyboard navigation should update the selected row when using arrow keys, preferably without pressing enter or space as that invokes the default action on the grid.