After multiple more phone calls and a very kind CPA who confirmed what I had reported manually, the workaround was to simply do my return on the desktop version. Of course I received this in an email from an email address I could not reply to! Very frustrating to get back into touch with TurboTax. So I imported my information from online, ran through everything, and it still gave me the wrong tax due amount.
The next workaround was to go into the info worksheet and check the box for "Itemize even if Minnesota itemized deductions are less than standard deductions." This gives me the correct MN state tax due (even though itemized is higher than standard).
Very odd. And very interesting this still hasn't been fixed. I only found this issue because I checked my return PDF manually. Good to know that the "100% accurate calculations guarantee" isn't really accurate I guess.
