Credit Card limited to 4 digits

Hello Experts,

We are experimenting with native SBO credit card abilities (no add-ons) for v.9.0 and I can't figure out how to enter the customer's full credit card number on the Sales Order screen. When I go to Sales Order > Payment Means > Credit Card > Credit Card No. the field is limited to 4 digits. Same on the Business Partner screen. What am I missing here?

Thanks for the help!