Regardless of which boot OS I select, i Reboot always has a check mark next to the first one listed. It will actually switch between selected OS's but it always indicates the first one is selected.
@Rkvas10 iReboot has the checkmark on the default OS your PC would boot into if you were to reboot normally (not via iReboot), up until you choose a different OS via iReboot. Either I am misunderstanding you or you are expecting different behavior from the iReboot menu that it actually provides.