A ToolbarItem(placement: .bottomBar) inside a NavigationSplitView detail/destination view is missing after a device rotation on iOS 26. The bottom toolbar is missing until the view has been presented in both orientations, after which it renders correctly from then on. The issue does not reproduce on iOS 18.
Environment
iOS 26 only — does not reproduce on iOS 18
iPhone 17 Pro Max and iPhone 17 Air (i.e. devices that expose the landscape size class Regular width / compact height)
SwiftUI NavigationSplitView with .balanced style
Steps to reproduce
Run the sample below on an iPhone 17 Pro Max or Air (or a simulator of either).
Open the detail view (which contains a .bottomBar toolbar item) while the device is in either orientation.
Rotate the device.
Observe that the bottom toolbar is now missing.
Expected behavior
The .bottomBar button remains visible across rotation, regardless of which orientation the view was first presented in.
Actual behavior
On first presentation, rotating the device causes the bottom toolbar to disappear.
Once the view has been presented in both landscape and portrait (roughly the third presentation), the bottom bar renders correctly and continues to behave correctly afterward.
The behavior is inconsistent
import SwiftUI
@main
struct MinimumReproducibleEventApp: App {
var body: some Scene {
WindowGroup {
NavigationSplitView(columnVisibility: .constant(.all)) {
NavigationLink("Primary") {
ContentView()
}
} detail: {
Text("Hello")
}
.navigationSplitViewStyle(.balanced)
}
}
}
ContentView
import SwiftUI
struct ContentView: View {
var body: some View {
VStack {
Image(systemName: "globe")
.imageScale(.large)
.foregroundStyle(.tint)
Text("Hello, world!")
}
.toolbar {
ToolbarItem(placement: .bottomBar) {
Button("Hello") {
print("hello")
}
}
}
}
}
Topic:
UI Frameworks
SubTopic:
SwiftUI
5
0
193