Steps to Reproduce
The issue happens intermittently and is, therefore, difficult to reproduce. If you schedule a report to run at midnight, you may see the issue occur.
Reschedule the report to not run at times when multiple reports are commonly run, such as midnight. Instead, schedule the report to run a couple of minutes before or after midnight (depending on your relative date filters like created or closed on Today, etc.)
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Related Problem: PRB622983