Class.observe() not working for Class.destroy() method

[firewire33]

SmartClient version: v11.1p_2017-07-19/LGPL Development Only
Browser: Chrome version 49.0.2623.112 m

It seems that in SmartClient version 9.0 and later, the Class.observe() method does not work when set up to observe calls to the destroy() method on object that extends Class. When I run the following code using SmartClient 8.3, clicking the "Destroy" button causes an alert box to pop up:

isc.defineClass("DestroyListener");
isc.DestroyListener.addProperties({
sayDestroying: function() {
isc.say("Destroying");
}
});

var destroyListener = isc.DestroyListener.create();
var object = isc.Class.create();
destroyListener.observe(object, "destroy", "observer.sayDestroying()");

isc.IButton.create({
title: "Destroy",
click: function() {
object.destroy();
}
});


When I run the same code using SmartClient version 9.0 or higher, clicking the button does not cause the alert box to pop up. I do not see any JavaScript error in the Chrome Developer Tools Console. Is there a way to get this working in version 9.0 or later?

[Isomorphic]

Thank you for the simple test. This issue is fixed in builds dated July 29 or later.

[firewire33]

Thank you!