Recalculation of discount line item

Hi Team,

We are facing some issue while redeeming shopping card in XStore version 16.0.5

this shopping card is treated as a discount line item. and when we use it after applying a transaction-discount then the last applied discount gets recalculated based on a new extended price. resulting in a due amount that is not allowing a cashier to complete a sale.

(shopping card pays for the entire amount of subtotal)

Please check the attached screenshot for a better understanding.

this also happens when we apply multiple transaction-discounts in a single sale.

so our question here is, can we disable this recalculation of last applied transaction-discount in a scenario like this and how we can achieve this?