Create CreditRefund via api not works, but it works via UI

Hi there,

I have an issue to create CreditRefund via API. The balance due on the invoice is $-318.7, I cannot create CreditRefund via api for $318.7. API returns with error message "Credit Refund amount must be less than or equal credit available on Invoice". But I am able to create CreditRefund via UI (desktop version of application) for $318.7 that is the same amount requested via API. As I remember, it was working previously, but recently returns the error.
Is there any know issue about this?

Is there any way to work around this?

Thanks