In my 1099-B there is a section for "Regulated Future Contracts and Options (Section 1256 Transactions)". I found the place of adding "straddles or section 1256 contracts". The first page is asking "Any Straddles or Section 1256 Contracts?". After I click "Yes", the page will flash a bit and send me back to the wages&income main page. I remember last year the next page after clicking "Yes" it should be the questions that are needed for generating form 6781, but this year it seems a bug.
