Strange Swift 6 Compiler Behavior

ActorTest.swift

import Foundation
import AVFoundation

// Using Xcode Version 16.0 beta (16A5171c), Swift 6 language mode.

// This compiles.
actor GoodActor {
    var value = 0
    
    func test() {
        value = 1
        let layer = AVCaptureVideoPreviewLayer()
        Task {
            value = 2
            layer.session = AVCaptureSession()
        }
    }
}


// This raises a compiler error.
actor BadActor {
    var value = 0
    
    func test() {
        value = 1
        let layer = AVCaptureVideoPreviewLayer()
        Task {
            /* value = 2 */
            layer.session = AVCaptureSession()
        }
    }
}