Error in Form 1116 Calculation?

Form 1116, line 3a, says to include lines 4, 5a, and 5b from Schedule A. TurboTax is also including 5c. Is this an error in the program?

The form's instructions say:

Enter the following itemized deductions from Schedule A (Form 1040)) on line 3a:

• Medical expenses (line 4)
• General sales taxes (line 5a)
• Real estate taxes for your home (line 5b).

Line 5c, "State and local personal property taxes," is not listed, but the app is definitely including it.