After repeated searches and calculations, the reasons for this phenomenon are:
Fill in "Foreign Income - Capital Gains" and fill in "Capital Gains - Calculation" as required. As a result, the software calculates the capital gains twice at 50% each in the federal part, and the report reflects 100% of the capital gains amount.
There are a lot of questions in TurboTax this year, so you need to fill them out and check them carefully.
