Calling @MainActor Environment Value

Using Swift
1

I'm calling the openDocument environment value to open a document with a document-based application. Seeing its definition, it's @Environment @MainActor.

import SwiftUI

struct ContentView: View {
    @Binding var document: TextDocument
    @Environment(\.openDocument) private var openDocument
    
    var body: some View {
    	VStack {
    	
    	}
    	.onAppear {
            Task {
                await loadBookmarks()
            }
    	}
    }
}

extension ContentView {
    @MainActor
    func loadBookmarks() async {
        for bookmarkItem in bookmarkViewModel.bookmarkItems {
            if let _ = resolveBookmark(bookmarkData: bookmarkItem.bookmarkData) { // resolving a security-scoped bookmark
                do {
                    try await openDocument(at: bookmarkItem.bookmarkURL)
                } catch {
                    print("\(error.localizedDescription)")
                }
            }
        }
    }
}

If I use the openDocument environment value, the application will open a document but crash. The Xcode console says

should only be called in the main thread

The loadBookmarks function is already marked MainActor. What else can I do to resolve this main thread issue? Thanks.

2

I guess the same issue is discussed here.