1) For the 2nd year in a row, I have found pre-populated data in my return, which I know I didn't enter into TurboTax. This year it was a $500 entry on line 25c of the 1040-SR. What is causing this?

2) I have independently calculated my tax due based on the IRS tables for 2022, and is comes up $1 less than the TurboTax calculation. WTF?