It works ok for me. Double check your birthdate. What code is in box 7? Did you check the little IRA box between boxes 7&8? You may have missed that box. A sure way to fix it is to delete it and enter the 1099R again Manually. Especially if you imported it.
While entering your form 1099-R, if you have entered a birth date which makes you older than 70 1/2 in the tax year, TurboTax will ask you if any portion of your distribution was transferred to charity. You can then enter the amount transferred to charity.
The code in box 7 of form 1099-R must be 7 and the box IRA/SEP/SIMPLE must be checked.
TurboTax will then reduce the taxable amount by the amount transferred to charity.
A IRA QCD should be 0 taxable on 1040 line 4b and QCD written by it. Unless you have other 1099R taxable amounts on 4b.
If you are looking at a summary screen or review screen those show the full amount as income and lump a lot of stuff together. You need to check the actual 1040 and make sure it’s right. For a 1099R QCD check 1040 line 4a and 4b for any taxable amount. It should say QCD by 4b and 0 taxable.