Why do I owe additional Federal and State tax if my Schedule K-1 distributions had taxes withheld

I have received a Final Schedule K-1 (Form 1065) from my employer for 2020, this partnership ended in Dec 2020 and that's when I was paid out and also federal and state taxes were withheld on it.

Now when I try to import my schedule K1 form 1065 in turbo tax I see that I owe additional state and federal taxes (my schedule K1 has "Net short-term capital gain (loss)" in 8. and "Net long term capital gain (loss)" in 9a.

Can you help me understand why do I owe additional taxes when taxes were held/paid at the time of distribution?