Taxable refund of Hawaii state income tax

I received a Hawaii state refund in 2020 for my 2019 taxes. I itemized in 2019 and took the deduction for state   general sales tax. When I prepared my 2020 return TT did not include the refund in my AGI. When I prepared my Hawaii 2020 return TT added the refund back into my Federal AGI. TT even stated "congratulations, your refund is not taxable" but it was still included. Anyone have this problem or know why this happened?