1099-R distribution code 7D annuity was paid with after tax money. The gross distribution amount on the 1099-R box 1 is being added to 1040 line 5a instead of the taxable amount on the 1099-R box 2a.
I have verified that all information on the actual form 1099-R is entered (as far as I can tell) correctly within Turbotax 1099-R by looking at that specific 1099-R within Turbotax.