Turbo Tax May Be Making Mathematical Errors!

I typed into Turbo Tax Premier that at one brokerage I have a long-term, non-covered net gain of $8218.24 and a long-term, covered net loss of -$867.18;  at another brokerage I have a long term, covered net gain of $14,104.43.  This should result in a total long term gain of $21,455.49.  However, when Turbo Tax summarizes my 2022 total gains/losses at a later point (when asking me to estimate future gains/losses), it lists my total long-term capital gain as $28,151.  This is $6695.51 more than what it really is.  (Note:  the total short term loss was calculated correctly.)  Please, what should I do?