Re: charitable contributions if you take the standard deduction - TT uses $300 instead of $600 which is why 12c is left blank when form is printed. How do you fix?

Received error 1040/1040SR Wks:  Charitable contributions:  Charitable contributions has an unacceptable value.  TT lets me enter $600 but it doesn't update the total value in line 12c therefore causing the field to be blank when the form is printed.