I, too, have encountered this very same error! Likely an error made in re-working the code for Form 2210 in order to deal with special 2020 situation of postponing Federal tax due dates from 4/15 to 7/15, effectively "merging" both 1st and 2nd quarters together into a single period for underpayment/overpayment calculation purposes; I think they got the withholding portion of line 19 correct, but messed up for the estimated tax portion.
Any idea/feedback/responses regarding when to expect this might be fixed?
