For "Private car", the Calculate button returns zero in the expense report

Summary:

In the expense report, the Calculate button shows zero with a newly created mileage policy.

Content (required):

Starting this year, the mileage policy has been changed to reflect a new rate. This policy has been activated and the setup is exactly the same as the one from the previous years.

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With the new policy, the employees fill the expense report for the Private car, but when they hit Calculate, the amount remains 0. Is the case for all the employees affected by the new policy.

If they test for 2022, the Calculate button shows the correct amount.

Could you please help understanding what is wrong and how to correct it?