Ah, got it working! My URL was malformed.

This happens when I trigger an onOpenURL in my app. I'm also using a NavigationSplitView Same error: "already contains an item with the identifier com.apple.SwiftUI.navigationSplitView.toggleSidebar"

Have the APIs changed in iOS 17 beta 7? ModelConfigurations now want a CKDatabase and not an identifier, but the docs have not been updated to show how to create one.

After discovering TapGesture does not provide location information, I started looking into this too. I hope that Apple improves documentation for implementing custom gestures. Right now it doesn't really have much. For example, the documentation for the body member is "The content and behavior of the gesture" - which is great, but if we could get a little more information on how to read UI Events that would be great!

SwiftUI uses the default two column behaviour that does what you are experiencing. I had to use a UISplitView at the top level of my app to get around that.

Has it been confirmed that a Safari Web Extension requires distribution in the Mac App Store? Apple's documents said you can, but I can't find where it says you can't distribute it outside the store when signed with your DeveloperID?