I understand that visionOS has multitasking, I just don't understand at all how it works. Apps, even when closed, remain open in the background, playing music, and there's seemingly no multitasking screen you can access in the sim to see what's there or to force-quit it. I'm not sure whether Apple just hasn't written one yet, or it relies on some gestures unavailable to the simulator. You can even ‘Hide Others’ to hide apps, but how you bring them back where they were, I have no idea
