Do you have more than one 1099R? What was the RMD from? Your IRA or a 401K? Since the RMD was waived for 2020 did you put it back or roll it over to another account or from a 401K to a IRA?
Delete the 1099R and re enter it. That may clear something out. If it was from a IRA see if the little IRA box between boxes 7&8 is checked on your form and on the screen.
