"All of my investment in this activity is at risk" on 'Describe the Partnership' screen needed to be checked. And as David explained in the prior page, on 'We need some information about your 199A income' screen, I checked "(business name) has a rental income (loss)" box and entered the Box 2 amount. This screen is a new one (I think) compared to last year's. That did the trick in calculating the QBI for me.
