Hrm- like Dan, I can’t replicate. But I noticed some differences in what’s available in your custom field settings vs. mine. Are you running the latest version of SC File? I’m showing v.2.1 - might be worth grabbing a fresh copy from an EE download and replacing the existing one.
Let’s see if that matters. (Was going to suggest upgrading from EE 2.2.2, but see you’ve already done that!)