5 years after this post, I have the EXACT SAME PROBLEM! An extraneous 8949, ironically also labeled as Form 3.
It also has Box F checked. It is otherwise identical to another 8949 that is correct, which has Box E checked. Why the extra form? It messes up the tax return and shouldn't exist at all. The broker did not send it, as confirmed by what is shown as the downloaded 1099 forms.
Has anyone else seen that or have a solution??
