When selecting individual time periods on the Missing Time report, this will not display data at all.
If you choose multiple periods data is retrieved.
The single-time periods exist in Clarity. Why are those not populated on the report?
The missing time periods are periods that fall exclusively on non-working days.
For non-working period data to be displayed, ensure the following parameter is checked:
Report description: Missing Time on Tech Docs for 15.9.1.
Reference also: Jaspersoft / reports known issues with Clarity