Why does line 1 on form 8606 on my Premier return show only half of the non-deductible contributions my wife and I made for 2018?

My wife and I each are over 50 so we made two $6500 nondeductible contributions for 2018 and have it entered correctly in the TurboTax Premier form.  I see only $6500 on line 1 in form 8606.  I have not filed yet until I resolve this since I want to keep track of my basis.