Undefined Behavior in TorqueScript

So I was scripting something today, and noticed some strange undefined behavior.

I'm modding a Torque game, and had recently written a tooltip extension. Strangely, after writing that script I noticed that a button, "JS_refresh", was deleting itself. Looking through, I made no direct calls to JS_refresh, apart from setActive() in two places. I found that it would be deleted when I pressed the "Direct Connect" button, calling JoinServerGui::directConnect():

function JoinServerGui::directConnect(%this) {
	//Clear FooBarGroup
	while (FooBarGroup.getCount()) {
		%object = FooBarGroup.getObject(0);
		//Stuff
		%object.delete();
	}
	//Etc
}

At this point, FooBarGroup did not exist, and getCount() was returning "" (null) and outputting a warning. What ended up happening is that, when the tooltip was updated, getCount() would return a value that passed as true in the while loop, still outputting the warning. The call to getObject(0) returned an unknown value, which just happened to be JS_refresh's id, and it outputted a warning as well.

Adding if (isObject()) fixed the code, but the fact that this happens still interests me. Generally calling a function on an undefined object just returns "" (null), but for some odd reason it started returning parseable values.

So I changed around the code slightly to see what would happen if I defined getCount() as a variable:

function JoinServerGui::directConnect(%this) {
	%count = FooBarGroup.getCount()
	//Clear FooBarGroup
	while (%count) {
		%object = FooBarGroup.getObject(0);
		//Stuff
		%object.delete();
		%count = FooBarGroup.getCount()
	}
	//Etc
}

This time, %count was defined with the id of JS_refresh, and %object was blank.
I tried writing this in a more simple manner:

function undefined() {
	%unknown = NonExistingObject.getCount();
	echo(%unknown);
}

I tried calling this function from the console, but got nothing but a warning. Thinking it might be from the button, I assigned undefined() as the command of a button, and voila, it worked.

So why was this happening? JS_refresh was being updated in a repeated schedule every 100ms, so I cancelled that and tried to see if I could get this to work with any other objects. I tried calling functions with objects as parameters, but so far cannot get anything but JS_refresh.

I'll probably keep looking into this later, but I though sharing it with you all might help me figure out why this strange behavior is happening.

- Glenn