Ah. Under the "soloist" button dropdown in the upper right, I can pick an option to pick a soloist and it brings up the menu and shows the one I picked. So maybe I didn't do the generate chord solo. I don't know.

But when I go to the soloist menu at the top, where classic windows menus are, and say, go to quantize the solo, or do anything else to the solo, it says there's no solo.