@mikeraker is correct. This is a bug. Even when you check the box in the Personal Info section that says "Either Mike or I claim itemized deductions," or check the box on the Federal Information Worksheet that says your spouse itemized deductions, when you click Continue on the interview screen that says "We've Chosen Itemized Deductions for You" TurboTax unchecks the box on the Federal Information Worksheet and changes the return to use the standard deduction.
@Mike9241 I will report this bug to the moderators.
