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!

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.

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"

Ah, got it working! My URL was malformed.