Deductions & credits

I should have thought of this before!  I used TurboTax Deluxe 2019 to run several sample scenarios.  My AGI on form 1040 (line 8b) is exactly $60,000.  I then entered various values in the Step-by-Step Interview for Charitable Donations of Money, Stock and Items-to-Goodwill, and then checked Forms View to see the results in Schedule A - "Gifts to Charity" (lines 11-14). 

Bottom line:  Cash ONLY Contributions could be as high as 60% of AGI or $36,000 (ScheduleA line 14).  BUT, as in my example above, if I first enter the "max" of  appreciated mutual funds (30% of AGI) or $18,000, and then Household items of $5,000, any cash contributed above  $7,000 (or a total of 50% of AGI: $30,000) was ignored.  Form Schedule A line 14 would be designated "LIMITED" and only allow up to a max of $30,000 on line 14.  

Am I missing something??