navigateToURL from AIR not working on Ubuntu

Hi,

The "navigateToURL" method in AIR does not work on Ubuntu;

I tried a simple example, but it doesn't work on Linux Ubuntu. On Windows it works perfectly.

On Ubuntu, nothing happens.

private function openTest():void

{

    var url: String = "https://www.google.com.br";

    var u:URLRequest = new URLRequest();

    u.method = URLRequestMethod.GET;
    u.url = url;

    navigateToURL(u, "_blank");

}

Can someone help me?