它看起来像SwiftUI中的错误。它可能与onDisappear从未被调用的事实有关。您可以通过添加来验证

.onAppear{
  print("Profile appeared")
}.onDisappear{
  print("Profile disappeared")
}

到ProfileHost视图。为了完成解雇，appear应该以权衡一个disappear，这是有道理的。

可以通过实现返回PresentationButton“依赖”状态变量的a的函数来解决该问题。

@State var profilePresented: Int = 0
func profileButton(_ profilePresented: Int) -> some View {
  return PresentationButton(
    Image(systemName: "person.crop.circle")
      .imageScale(.large)
      .accessibility(label: Text("User Profile"))
      .padding(),
    destination: ProfileHost(),
    onTrigger: {
      let deadlineTime = DispatchTime.now() + .seconds(2)
      DispatchQueue.main.asyncAfter(deadline: deadlineTime, execute: {
        self.profilePresented += 1
      })
  })
}

并更换

.navigationBarItems(trailing:
      PresentationButton(
          Image(systemName: "person.crop.circle")
              .imageScale(.large)
              .accessibility(label: Text("User Profile"))
              .padding(),
          destination: ProfileHost()
      )
  )

与

.navigationBarItems(trailing: self.profileButton(self.profilePresented))

我强烈建议不要使用此“解决方案”，而应将错误报告给Apple。