I am using TT Deluxe, totally updated, and this bug still exists. Terrifying actually, because I stumbled upon it accidentally, and makes me worried what else is not getting counted.
To be clear, my entered mortgage interest was showing up in Ste-by-Step, but NOT on the actual form and in the calculations. This was important because I am very close to exceeding the standard deduction and was entering a dummy charitable deduction to see how close. I knew something was wrong when I could donate an extra $12k without any impact.
The "fix" did work, i.e. delete the entire entry and re-follow the step-by-step, but this has really shaken my confidence in TurboTax, which I have used for 20+ years, given this is a significant bug and filing day is in 2 days.
