列表视图在SwiftUI中抖动

我有一个主-细节视图，它使用完全普通的SwiftUI导航一系列连续列表，我注意到两件事

通过导航链接访问列表行时，列表行宽度会抖动

.navigationBarTitle在新视图完全显示在屏幕上之前不可见

似乎这两件事都不应该发生？不知道是否有人有任何想法（视频和代码附件）

问题视频：

UserList.swift:

import SwiftUI

struct UserList: View {
    var body: some View {
        NavigationView {
            List(userData) { this in
                NavigationLink(destination: CityList(user: this, cities: this.cities)) {
                    UserRow(user: this)
                }

            }
            .navigationBarTitle(Text("Users"))
        }
    }
}

import SwiftUI

struct UserRow: View {
    var user: UserModel
    var body: some View {
        VStack(alignment: .leading) {
            Text(user.firstName + " " + user.lastName)
                .font(.headline)
        }
    }
}

import SwiftUI

struct CityList: View {
    var user: UserModel
    var cities: [CityModel]

    var body: some View {
        List (cities) { this in
            NavigationLink(destination: TownList(city: this, towns: this.towns)) {
               CityRow(city: this)

            }.navigationBarTitle(Text(self.user.firstName + self.user.lastName))
        }
    }
}

import SwiftUI

struct CityRow: View {
    var city: CityModel

    var body: some View {
        VStack(alignment: .leading) {
            Text(city.name)
                .font(.headline)
        }
    }
}

UserRow.swift:

import SwiftUI

struct UserList: View {
    var body: some View {
        NavigationView {
            List(userData) { this in
                NavigationLink(destination: CityList(user: this, cities: this.cities)) {
                    UserRow(user: this)
                }

            }
            .navigationBarTitle(Text("Users"))
        }
    }
}

import SwiftUI

struct UserRow: View {
    var user: UserModel
    var body: some View {
        VStack(alignment: .leading) {
            Text(user.firstName + " " + user.lastName)
                .font(.headline)
        }
    }
}

import SwiftUI

struct CityList: View {
    var user: UserModel
    var cities: [CityModel]

    var body: some View {
        List (cities) { this in
            NavigationLink(destination: TownList(city: this, towns: this.towns)) {
               CityRow(city: this)

            }.navigationBarTitle(Text(self.user.firstName + self.user.lastName))
        }
    }
}

import SwiftUI

struct CityRow: View {
    var city: CityModel

    var body: some View {
        VStack(alignment: .leading) {
            Text(city.name)
                .font(.headline)
        }
    }
}

CityList.swift:

import SwiftUI

struct UserList: View {
    var body: some View {
        NavigationView {
            List(userData) { this in
                NavigationLink(destination: CityList(user: this, cities: this.cities)) {
                    UserRow(user: this)
                }

            }
            .navigationBarTitle(Text("Users"))
        }
    }
}

import SwiftUI

struct UserRow: View {
    var user: UserModel
    var body: some View {
        VStack(alignment: .leading) {
            Text(user.firstName + " " + user.lastName)
                .font(.headline)
        }
    }
}

import SwiftUI

struct CityList: View {
    var user: UserModel
    var cities: [CityModel]

    var body: some View {
        List (cities) { this in
            NavigationLink(destination: TownList(city: this, towns: this.towns)) {
               CityRow(city: this)

            }.navigationBarTitle(Text(self.user.firstName + self.user.lastName))
        }
    }
}

import SwiftUI

struct CityRow: View {
    var city: CityModel

    var body: some View {
        VStack(alignment: .leading) {
            Text(city.name)
                .font(.headline)
        }
    }
}

CityRow.swift:

import SwiftUI

struct UserList: View {
    var body: some View {
        NavigationView {
            List(userData) { this in
                NavigationLink(destination: CityList(user: this, cities: this.cities)) {
                    UserRow(user: this)
                }

            }
            .navigationBarTitle(Text("Users"))
        }
    }
}

import SwiftUI

struct UserRow: View {
    var user: UserModel
    var body: some View {
        VStack(alignment: .leading) {
            Text(user.firstName + " " + user.lastName)
                .font(.headline)
        }
    }
}

import SwiftUI

struct CityList: View {
    var user: UserModel
    var cities: [CityModel]

    var body: some View {
        List (cities) { this in
            NavigationLink(destination: TownList(city: this, towns: this.towns)) {
               CityRow(city: this)

            }.navigationBarTitle(Text(self.user.firstName + self.user.lastName))
        }
    }
}

import SwiftUI

struct CityRow: View {
    var city: CityModel

    var body: some View {
        VStack(alignment: .leading) {
            Text(city.name)
                .font(.headline)
        }
    }
}

---

第三次才是魅力所在，他们就是这么说的

抖动只是在模拟器上，我也有同样的问题。然后我在手机上安装了这个应用程序，效果非常好。在模拟器上忽略它

---

而标题的问题是——据我所知——也只是模拟器上的一个bug，我在手机上没有这些问题

他们是这么说的，第三次才是魅力所在

抖动只是在模拟器上，我也有同样的问题。然后我在手机上安装了这个应用程序，效果非常好。在模拟器上忽略它

---

而标题的问题是——据我所知——也只是模拟器上的一个bug，我在手机上没有这些问题

你找到解决办法了吗？我在13.3的手机和模拟器上都遇到了这个问题。你找到解决办法了吗？我在13.3的手机和模拟器上都遇到了这个问题。