This is a bug introduced into RC2. It will be corrected in the release.
In the meantime, in some circumstances handling the CurrentCellChanged event in the manner below avoids this problem.
Sorry for the inconvenience.
Private Sub GridControl1_CurrentCellChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles GridControl1.CurrentCellChanged
If Me.GridControl1.CellRenderers("CheckBox") Is Me.GridControl1.CurrentCell.Renderer Then
Me.GridControl1.CurrentCell.Deactivate(True)
’ Console.WriteLine("GridControl1_CurrentCellChanged")
End If
End Sub