TableView loses focused cell after sorting

[Pete Moss]

I just noticed something odd in the TableView wrt sorting and the focused
cell. It seems that if there are selected cells, after resorting, the
TableView restores the selected cells (because the TablePositions will have
changed), but in doing so, the focused cell is cleared. This happens in the
private TableView.updateSelection() as a result of calling
clearSelection(). It would seem to me that that it should cache the focused
cell and restore that after sorting. Would you agree? Should I file a JIRA
issue?