Roth conversion and 1095-A form

I've been working on 2019 taxes. Gross income was around $26,000 and we received substantial Health Care Tax Credit (1095-A).  Also, we decided to convert money from a traditional IRA to a Roth IRA. When I entered the Roth conversion amount, all of our HCTC went away and our tax bill nearly quadrupled. 

 

Prior to adding the 1095-A info, federal tax was around $8,500. after adding the 1095-A info federal tax increased to around $32,500.

 

Is this a TurboTax bug or is the IRS not allowing a HCTC and a conversion to a Roth IRA in the same year?  It appears the Roth conversion funds are being counted as income.  Which they aren't