I found the same error, page 2, part III, line 10, column (a). In my case it is adding line 27 column (a), and column (b) together and auto filling form 2210 , part III line 10 (a) with this incorrect value. I have spent 3 hours on the phone with Turbotax. Hopefully they will fix this soon. I believe its a holdover from this form from 2020 as the first quarter installment was delayed due to Covid 19 and they added the two quarters together last year!!
