I'm dealing with this exact same thing. I spent over 2 hours with two different customer service people, no solution except one tech said everything was "fine" and that TT "guaranteed its calculations," the other said that it was my OS (TT2023 still supports MacOS Monterey) and to switch to the online version. The techs could clearly see the problem in a screen share, but neither said they would report the error. I also discovered that when I deleted a schedule C in the federal version, it does not delete the schedule C from states, and this creates other issues. I had worked on my taxes a few weeks ago and this was not an issue, so I can only conclude that this problem was created by the latest update.
