Basic IRA to Roth Conversion - is 5329-T required and 6% tax

Hi,

I did a basic IRA to Roth conversion in 2020.

TurboTax is including the form 5329-T and imposing a 6% tax for excessive ROTH contributions.

I'm over 59-1/2 so there's no 10% penalty.

I was told that this 6% is not required.

Is this a TurboTax bug?

TIA