Exclude Tax from Calculation Discount option on Payables Invoice Options

With sales/use tax configured in Oracle Fusion Payables Cloud, we are noticing that the discount amount shown on the installments page for a 1% discount is based on the total amount of the invoice, which includes taxes.

On the Invoice Options page for the Business Unit, we have the Discount options enabled for Exclude tax from calculation. We also have the Discount Allocation Method set to Single distribution, because the client has enabled automatic offsets and wants to distribute the discount taken across balancing segments.

When an invoice is processed and tax lines added during invoice validation, the Installments tab reflects a 1% discount based on the total invoice amount, not the total minus taxes.