Reproduce:

Create a report with a StartDate filter with the following payload:

{
  type: 'startDate',
  data: {type: 'fixed', start: '2020-07-10T00:00:00', end: '2020-07-10T23:59:59'},
}

Expected:

The report evaluation result contains all process instances that started on the 2020-07-10

Observed:

The report evaluation result contains no instances