UPDATE:
I tried a private browsing tab as well as different browsers and am still getting the same error.
I’m trying to enter a payment on the Quick entry screen with Custom Amounts. I keep getting an error “Amount must be a positive number” with a highlight of the “Amount” field at the bottom of the form. The form won’t let be make the entry no matter what value is in this field. I’ve checked all my inputted values and all are positve. Any ideas or is there a bug in a recent update?