QCDs not reflected on 2018 return?

In looking over my 2018 return for end of year tax planning for 2019, I see that my line 4a says $130,809 followed by the QCD annotation and then 4b (taxable amount) is $140,460.  All the numbers would have been reflected in my Fidelity records that TurboTax imported (although I don't see QCDs reflected on my copy of the 2018 or 2017 1099r's -- they have gross amount and taxable amount the same). 

1.  How can the post-QCD taxable amount be more than the 4a amount?  My records indicate that I did $2,100 worth of QCDs in 2018.  I see that my 2017 return's line 15a (the old IRA line) is less than 15b.  Why isn't that true of the 2018 return?

2.  Where are QCDs reflected on my Fidelity 1099r's?  Does the QCD amount just come off the top of the gross amount?