//Workaround: Handle ItemClicked event of the pageview element
private void RadGridView1_ViewCellFormatting(object sender, CellFormattingEventArgs e)
{
    GridDetailViewCellElement cell = e.CellElement as GridDetailViewCellElement;
    if (cell != null)
    {
        var pageviewElement = cell.PageViewElement as RadPageViewStripElement;

        pageviewElement.ItemClicked -= this.PageviewElement_ItemClicked;
        pageviewElement.ItemClicked += this.PageviewElement_ItemClicked;
    }
}

private void PageviewElement_ItemClicked(object sender, EventArgs e)
{
}