Alerts not displaying in Xcode Cloud snapshot tests

[Alexminator99]

I've created a simple test to get around swift-snapshot library before fully implement the rest of tests in the codebase. I noticed that Alerts are displayed correctly in local tests but not in Xcode Cloud (when test is an action to be executed).

func testLoginViewSnapshotAlertAccept() {
        let store = Store(initialState: LoginFeature.State(), reducer: {
            LoginFeature()
        })
        let view = LoginView(store: store)
        
        let vc = UIHostingController(rootView: view)
        
        withSnapshotTesting(diffTool: .ksdiff) {
            assertIPadSnapshot(of: vc, as: .windowedImage)
            
            store.send(.loginWithCloverTapped)
            
            assertIPadSnapshot(of: vc, as: .windowedImage)
            
            store.send(.alert(.presented(.accept)))
            
            assertIPadSnapshot(of: vc, as: .windowedImage)
        }
    }

In order to get the Alert to be displayed in the screenshot I've used one of the snippets presented in one of the PointFree videos related to snapshotting:

    extension Snapshotting where Value: UIViewController, Format == UIImage {
    static var windowedImage: Snapshotting {
        Snapshotting<UIImage, UIImage>.image(
            precision: 0.98,
            perceptualPrecision: 0.98
        ).asyncPullback { vc in
            Async<UIImage> { callback in
                UIView.setAnimationsEnabled(false)
                guard let window = UIWindow.keyWindow else { return }
                window.rootViewController = vc
                DispatchQueue.main.async {
                    let image = UIGraphicsImageRenderer(bounds: window.bounds).image { ctx in
                        window.drawHierarchy(in: window.bounds, afterScreenUpdates: true)
                    }
                    callback(image)
                    UIView.setAnimationsEnabled(true)
                }
            }
        }
    }
}

extension UIWindow {
    static var keyWindow: UIWindow? {
        let allScenes = UIApplication.shared.connectedScenes
        for scene in allScenes {
            guard let windowScene = scene as? UIWindowScene else { continue }
            for window in windowScene.windows where window.isKeyWindow {
                return window
            }
        }
        return nil
    }
}

Just some minor caveat with UIWindow to get ride of the deprecation warning.

Here are reference, failure and difference pngs generated by Xcode Cloud:

The definition of assertIPadSnapshot is extracted from another discussion on how to provide the correct path to Xcode Cloud to make the comparisons:

func assertIPadSnapshot<Value, Format>(
        of value: @autoclosure () throws -> Value,
        as snapshotting: Snapshotting<Value, Format>,
        named name: String? = nil,
        record recording: Bool = false,
        timeout: TimeInterval = 5,
        file: StaticString = #file,
        testName: String = #function,
        line: UInt = #line
    ) {
        let testClassName = URL(fileURLWithPath: "\(file)", isDirectory: false)
            .deletingPathExtension()
            .lastPathComponent
        
        let baseDirectory = isRunningOnCI ? testBundleUrl : TestNamespace.sourceCodeTestDirectory()
        
        let snapshotDirectory = baseDirectory
            .appending(path: "__Snapshots__/\(testClassName)")
            .path()
        
        let failure = verifySnapshot(
            of: try value(),
            as: snapshotting,
            named: name,
            record: recording,
            snapshotDirectory: snapshotDirectory,
            timeout: timeout,
            file: file,
            testName: testName,
            line: line
        )
        
        guard let message = failure else { return }
        XCTFail(message, file: file, line: line)
    }

Has anyone experienced this before? Am I missing something?

Xcode: 15.3
Swift: 5.10
swift-snapshot-test: 1.17.2