Here are the steps to reproduce the issue:

• iOS 26+ required

• create any input that triggers opening keyboard

• add toolbar to keyboard (with any buttons)

• open keyboard (e.g. by focusing input)

• close keyboard

• background app (warnings are printed on this step)

• get back to foreground

• see that bottom safe area is broken (you can add any view that is bound to safe area)

Removing toolbar fixes the issue, btw.

The following warnings are printed:

-[RTIInputSystemClient remoteTextInputSessionWithID:performInputOperation:]  perform input operation requires a valid sessionID. inputModality = Keyboard, inputOperation = dismissAutoFillPanel, customInfoType = UIUserInteractionRemoteInputOperations

-[RTIInputSystemClient remoteTextInputSessionWithID:performInputOperation:]  perform input operation requires a valid sessionID. inputModality = Keyboard, inputOperation = dismissAutoFillPanel, customInfoType = UIUserInteractionRemoteInputOperations

Snapshotting a view (0x15b0a4800, UIKeyboardImpl) that is not in a visible window requires afterScreenUpdates:YES.

Here is a test project for demonstrating the issue:

import SwiftUI

struct ContentView: View {
    @State var selection: Int = 0
    @State var presentingModal = false

    var body: some View {
        NavigationStack {
            VStack(spacing: 0) {
                TabView(selection: $selection) {
                    Group {
                        Button("Present") { self.presentingModal = true }
                            .tag(0)
                        Text("Second").tag(1)
                    }
                    .toolbar(.hidden, for: .tabBar)
                }

                HStack(spacing: 0) {
                    ForEach(0...1, id: \.self) { tab in
                        Image(systemName: "cloud.heavyrain.fill")
                        .padding(.vertical, 16)
                        .frame(maxWidth: .infinity)
                        .contentShape(Rectangle())
                        .onTapGesture {
                            selection = tab
                        }
                    }
                }
                .padding(.horizontal, 16)
                .background(Color.secondary)
            }
            .ignoresSafeArea(.keyboard)
            .navigationTitle("Title")
            .navigationBarTitleDisplayMode(.inline)
        }
        .sheet(isPresented: $presentingModal) {
            PresentedView()
        }
    }
}

struct PresentedView: View {
    @State var text = ""
    @FocusState var isInputActive: Bool

    var body: some View {
        NavigationStack {
            VStack {
                TextField("", text: $text)
                    .focused($isInputActive)
                    .padding()
                    .background(.secondary)

                Spacer()
            }
            .padding(.top, 40)
            .padding(.horizontal, 20)
            .toolbar {
                ToolbarItemGroup(placement: .keyboard) {
                    Button("Close") {
                        isInputActive = false
                    }
                }
            }
        }
    }
}

#Preview {
    ContentView()
}