I have the same problem. I live in KS which now allows itemized deductions even when the standard deduction is taken on the federal form. I have entered my charitable donations and all other deductible amounts in the federal form. The total is less than the standard deduction for MFJ. If I understand correctly, line 12b should be $600, but Line 12b remains blank. I can override the amount, of course, but I would expect TT to enter the correct amount for me. Running TT 2021 download version on Windows 10.
