UISearchTab with automaticallyActivatesSearch only works on second tap?

let searchTab = UISearchTab { tab in
    UINavigationController(rootViewController: SearchViewController())
}
searchTab.automaticallyActivatesSearch = true

class SearchViewController: UIViewController {
    private let searchController = UISearchController(searchResultsController: UIViewController())
    
    override func viewDidLoad() {
        super.viewDidLoad()
                
        navigationItem.searchController = searchController
    }
}

With this setup when I launch the app and tap the search tab, the keyboard will not appear. Switching tabs and tapping search again works from then on. Am I doing something wrong here?

Video here: https://mastodon.social/@nicoreese/114983627125286299