Liquid Glass TabBar animations causes Hangs, bug with UIKitCore?

With iOS 26.1 we started seeing a bug that only appears on iPhone Air. This bug is visible with simulators too. I have tried so many different ways to fix the issue, but Instruments Profiler is pointing at UIKitCore.

We load a tab bar, when the user attempts to switch a tab, the app hangs and never recovers. It happens right as the animation of the Glass bubble is in progress.

I have tried a UIKit Tab bar, a SwiftUI Tab bar. I tore out AppDelegate and did a direct @main SwiftUI entry for my application. This issue appears with every tab bar instance I try.

I attempted to disable LiquidGlass by utilizing this flag UIDesignRequiresCompatibility in my plist, but the flag seems to be ignored by the system.

I am not sure what else to try. I have a trace file if that is helpful. What else can I upload?

Here is what the code looks like.

struct ContentView: View {
    @State private var selectedTab = 2
    
    var body: some View {
        TabView(selection: $selectedTab) {
            Text("Profile")
                .tabItem {
                    Label("Me", systemImage: "person")
                }
                .tag(0)
            
            Text("Training")
                .tabItem {
                    Label("Training", systemImage: "calendar")
                }
                .tag(1)
            
            Text("Home")
                .tabItem {
                    Label("Home", systemImage: "house")
                }
                .tag(2)
            
            Text("Goals")
                .tabItem {
                    Label("Goals", systemImage: "target")
                }
                .tag(3)
            
            Text("Coach")
                .tabItem {
                    Label("Coach", systemImage: "person.2")
                }
                .tag(4)
        }
    }
}

#Preview {
    ContentView()
}

and AppView entry point

import SwiftUI

@main
struct RunCoachApp: App {
    var body: some Scene {
        WindowGroup {
            ContentView()
        }
    }
}