Throughout the WWDC guides and videos, Apple claims existing iOS and iPadOS apps will run in the visionOS Pro Simulator "unmodified." But none of my existing UIKit apps do.
xrOS is installed and it does run for new project templates. But even after making sure "Apple Vision (Designed for iPad)" is added to my project settings, the destination never appears in the picker UI.
What is Xcode detecting? If existing apps must be using SwiftUI or somesuch, then Apple needs to state that as a requirement.
And if that is the case, is there a migration example of meeting this requirement without breaking or rewriting my apps?