[Bug] ViewAlias not working in some cases on iOS 26

[strangeliu]

ViewAlias always show the default body.
I created a demo that can reproduce this issue https://github.com/strangeliu/ViewAliasIssue

[strangeliu]

After wrap the AtomRoot with ZStack, It works again, so the UnaryViewModifier is not working?

[nathantannar4]

Hi,

It's not clear to me what bug you're facing. All of these examples are working for me.

struct PreviewAlias: ViewAlias {
    var defaultBody: some View {
        Text("Default")
    }
}

// "Hello, World"
PreviewAlias()
    .viewAlias(PreviewAlias.self) {
        Text("Hello, World")
    }

// "Hello, World"
ZStack {
    PreviewAlias()
}
.viewAlias(PreviewAlias.self) {
    Text("Hello, World")
}

// "Hello, World"
UnaryViewAdapter {
    PreviewAlias()
}
.viewAlias(PreviewAlias.self) {
    Text("Hello, World")
}

[strangeliu]

This demo can reproduce the issue:

import SwiftUI
import Engine

struct ConditionView<Content: View>: View {
    
    let content: Content
    
    init(@ViewBuilder content: () -> Content) {
        self.content = content()
    }
    
    var body: some View {
        if true {
            VStack {
                content
            }
        } else {
            HStack {
                content
            }
        }
    }
}

struct SomeAlias: ViewAlias {
    
    var defaultBody: some View {
        Text("Not working 🥲")
    }
}

public struct ContentView: View {
    
    public var body: some View {
        ConditionView {
            ConditionView {
                SomeAlias()
            }
            .viewAlias(SomeAlias.self) {
                Text("It works! 😎")
            }
        }
    }
}

[nathantannar4]

Fixed in 2.3.1