Instructions 1. Click 'Pane Me!' 2. Observe empty ListView in the SheetPane 3. Click 'Cancel' 4. Click 'Pane Me!' a second time 5. Click on ListView to observe 3 empty (but selectable) rows 6. Click 'Cancel' 7. Click 'Pane Me!' a third time 8. Observe populated ListView in the SheetPane Q: why is the ListView empty initially? How can I ensure it is populated the first time around?