Part-Paid invoices overcharged via PayPal Payments

Symptom

After updating to WHMCS 8.12.1, clients paying invoices via the PayPal Payments gateway will be charged the full invoice subtotal when paying a part-paid invoice, instead of the balance.

Hotfix

We have created a hotfix for WHMCS 8.12.1 to correct the issue. You can download it at: