I have the same problem for tax year 2019. Received the excess contribution check plus the gain on 4/7/2020 but no 1099R until next year. The help button in turbotax suggest to file like Ireceived a 1099R instead of adding the amount to "other income".
Also if I follow your advice, do i report just the extra contribution or also include the gain? I think the gain should only be reported in 2020.
Which solution should i use? Thank you.
