Time of Day (sec) Data Field No Longer Available?

On both my tactix 7 AMOLED and tactix 7 Standard I have been able to configure Data Screens in an Activity with the field Time of Day (sec) or just Time of Day.

The Time of Day (sec) field would display time in the system format including seconds, like 15:17:45.  The Time of Day field would display the time in system format with just hours and minutes, like 15:17.

I have found the availability of the seconds display to be critical in some situations.

Now, on my new tactix 8 - 51mm Solar, the only field I have available is Time of Day.  The Time of Day (sec) field is no longer available.

Have others observed this?

Am I overlooking some buried configuration which would allow the selection of the Time of Day (sec) field?

Any observations from fellow users would be appreciated.

TIA