No one from Turbotax responded to this. So, I looked back to my 2019 return. I had a similar problem, which stemmed from Ishares Gold Trust securities. This type of security has a monthly expense that involves selling a fraction of a gold bullion to pay expenses. There is no cost basis in this case. In 2019, the Turbotax expert advised that I list the cost basis as the same value as the proceed value, and refer to the transaction as "short-term non-covered securities". So, the gain is zeroed out. You need to go back to the individual stock line item and edit the cost basis and its description. This should take care of the problem. I hope this helps.
