Form 8606 must include Inherited IRA withdrawals?

My husband has both a traditional IRA (with some nondeductible contributions) and a non-spouse inherited IRA (with no nondeductible contributions).  He withdrew money from both accounts in 2019 and 2020.

 

TurboTax, for 2019, included only his traditional IRA withdrawal on form 8606.

 

TurboTax, for 2020, now includes the sum of both withdrawals on form 8606.

 

I can't find any IRS information about a tax law change that might explain the different treatment for 2019 and 2020.  Is TurboTax correctly handling this in both years, or do I likely have a mistake somewhere?