I'm having the same problem. The amount I enter in the Cost Basis field has a dramatic effect on my allowable deduction and tax refund when it should have no effect whatsoever. This donation does exceed the 30% of income limit and along with my other donations the 60% limit has also been exceeded so that could have something to do with the bug. In the date field I've entered 02/12/16 so it's definitely Long Term. I'm using the desktop Deluxe 2019 version of TurboTax.
