kotlin – Compose Multiplatform UI in iOS Share Extension exhibits clean display

I am attempting to make use of Compose Multiplatform UI in an iOS Share Extension, however the Compose content material solely exhibits a clean white display. Here is what I’ve noticed:

The UIViewController is sized appropriately (the display background is black with out Compose).
My composable works wonderful in the principle iOS app (it is simply fullscreen crimson Field).
I’m embedding the Compose view like this:

class ShareViewController: UIViewController {

    override func viewDidLoad() {
        tremendous.viewDidLoad()
        print("ShareViewController loaded")

        view.backgroundColor = UIColor.systemBackground
        let debugLabel = UILabel()
        debugLabel.textual content = "UIKit Label: Debugging Structure"
        debugLabel.textAlignment = .middle
        debugLabel.backgroundColor = UIColor.systemYellow
        debugLabel.translatesAutoresizingMaskIntoConstraints = false
        view.addSubview(debugLabel)
        
        NSLayoutConstraint.activate([
            debugLabel.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor),
            debugLabel.leadingAnchor.constraint(equalTo: view.leadingAnchor),
            debugLabel.trailingAnchor.constraint(equalTo: view.trailingAnchor),
            debugLabel.heightAnchor.constraint(equalToConstant: 150)
        ])
        
        
        let composeVC = MainViewControllerKt.ShareExtensionViewController()
        addChild(composeVC)
        view.addSubview(composeVC.view)
        composeVC.view.translatesAutoresizingMaskIntoConstraints = false

        NSLayoutConstraint.activate([
            composeVC.view.topAnchor.constraint(equalTo: debugLabel.bottomAnchor),
            composeVC.view.leadingAnchor.constraint(equalTo: view.leadingAnchor),
            composeVC.view.trailingAnchor.constraint(equalTo: view.trailingAnchor),
            composeVC.view.bottomAnchor.constraint(equalTo: view.bottomAnchor)
        ])
        
        composeVC.didMove(toParent: self)
    }
}

Is that this some type of rendering limitation in extension or I’m lacking one thing?