Tax Year Prior to 2020: what-if worksheet & standard deduction

My wife and I are both over 65, filing a joint return. On the 2019 Turbotax Premier What-if Worksheet, the standard deduction of $27000 is correctly shown in column 1 (copied from our 1040). However, when I enter the identical information  (ages = 70 and 73, "MFJ" filing status, all numerical values the same) manually into column 2, Turbotax computes the standard deduction as $24,400. That is, the calculation seems to ignore the fact that we are both over 65. Is this an error in the What-If calculator?