Why does TT suggest taking itemized deduction of $12K when I thought standard deduction is $24K (married, joint).

"Based on what you just told us, itemizing your deductions is best for you"

Itemized deduction: $12,355
but that's way smaller than standard deduction at $24,800.   The $12K itemized makes sense, based on what I entered.  I am unclear why turbotax would suggest it, I thought for sure I would take standard deduction this year?