The simplest tasks on iPadOS are either incredibly difficult and time-consuming, or they’re so unintuitive that even a 25-year Apple veteran can't figure them out. Frankly, neither reflects well on iPadOS.
@snazzyq Just drag the Freeform icon from the dock while you are in Freeform. Voilà: second window. 🙂
@dgavin @snazzyq Thanks for sharing. This solves it. Works with all apps (at least the ones I tested)!