Worker在getSharedProperty（）中没有收到MessageChannel对象

Question

我正在使用AIR 23 SDK创建AIR应用程序，并且需要使用Worker对象。使用this adobe documentation我做了一个简单的例子来理解它。代码如下：

if(Worker.current.isPrimordial) {

    var worker:Worker = WorkerDomain.current.createWorker(this.loaderInfo.bytes);

    var mainToWorker:MessageChannel = Worker.current.createMessageChannel(worker);
    var workerToMain:MessageChannel = worker.createMessageChannel(Worker.current);

    worker.setSharedProperty("mtw", mainToWorker);
    worker.setSharedProperty("wtm", workerToMain);

    worker.start();

    trace("[MAIN] Start worker.");
    trace("[MAIN] Property one: "+worker.getSharedProperty("mtw"));
    trace("[MAIN] Property two: "+worker.getSharedProperty("wtm"));

}
else {

    trace("[WORKER] Status: "+Worker.current.state);

    var mtw = Worker.current.getSharedProperty("mtw");
    var wtm = Worker.current.getSharedProperty("wtm");

    trace("[WORKER] Property one: "+mtw);
    trace("[WORKER] Property two: "+wtm);

}

但输出痕迹是：

[MAIN] Start worker.
[MAIN] Property one: [object MessageChannel]
[MAIN] Property two: [object MessageChannel]
[WORKER] Status: running
[WORKER] Property one: undefined
[WORKER] Property two: undefined

当我将AIR SDK更改为3.4时，它可以正常工作！跟踪更改为：[WORKER] Property one: [object MessageChannel]和[WORKER] Property two: [object MessageChannel]。

这是一个错误吗？有人能帮助我吗？