Solved. I had stupid dead code.

Would safeAreaInset, applied to the button you want to be tappable, help? (I have not dealt a lot with safe areas so I am guessing.) How to inset the safe area with custom content: https://www.hackingwithswift.com/quick-start/swiftui/how-to-inset-the-safe-area-with-custom-content

Just don't use .automatic.

My trouble was stale cache in the simulator or Mac. Restarting/rebooting a couple times helped.

(Don't post while sleepy) Right in the docs... .modelContainer(for: [MyModel1.self, MyModel2.self], isUndoEnabled: true)

@Environment(\.openWindow) var openWindow Window("About", id: "about") {     MyAboutView() } .commands {     CommandGroup(replacing: .appInfo) {         Button(action: {             openWindow(id: "about")         }, label: {             Text("About MyAPP")         })     } }

Answering my own question. I want to use Commands. See newItem. Here's an example: struct DocDemoApp: App {     @Environment(\.openWindow) var openWindow     @Environment(\.openDocument) private var openDocument     var body: some Scene {         DocumentGroup(newDocument: { DocDemoDocument() }) { config in             ContentView(document: config.document)         }         Window("Choose Template", id: "wizard") {             NewDocWizard()         }         .commands {             CommandGroup(replacing: .newItem) {                 Section {                     // Menu File >                     Button("New") { openWindow(id: "wizard") }.keyboardShortcut(KeyboardShortcut("N"))                     Button("Open") { open() }.keyboardShortcut(KeyboardShortcut("o"))                     Button("Open Recent...") { print("NYI") }                 }             }             CommandGroup(replacing: .singleWindowList) {                 // Menu Window > Choose Template, ... (list of single windows)                 // Hide and force user to use File > New for this window             }         }     }     private func open() {         let panel = NSOpenPanel()         panel.allowedContentTypes = [.exampleText]         panel.allowsMultipleSelection = true         panel.canChooseDirectories = false         panel.runModal()         if let url = panel.url {             Task {                 try! await openDocument(at: url)             }         }     } }

On my Intel MBP is get a different error when the thread sanitizer is on. "malloc: nano zone abandoned due to inability to preallocate reserved vm space." StackOverflow suggests this is relatively harmless, but paired with the error I get on my Mac Mini (Apple Silicon) There's something afoul. [https://stackoverflow.com/questions/64126942/malloc-nano-zone-abandoned-due-to-inability-to-preallocate-reserved-vm-space]

I created a blank iOS app project in Xcode, enabled the thread sanitizer and it crashes exactly the same way on two simulators. I'm going to try a few more things to see how much might be me or Xcode.

I found that .autocapitalization(.none) doesn't work for me in iOS 15. I found .textInputAutocapitalization(.never) does work.

I have the iOS 16 profile installed but Software Update says I have 15.6 and I'm as up to date as I can be. I removed the profile and reinstalled it, yet it still refuses to install iOS 16.

Solved. Some slip of the mouse, perhaps, but the running target had changed to my Mac.