change event is not fired for FxRadioButtonGroup when state is changed and FxRadioButton is removed

Steps to reproduce:
1. Compile & run:
<?xml version="1.0" encoding="utf-8"?>
<FxApplication xmlns="http://ns.adobe.com/mxml/2009" xmlns:comps="*" creationComplete="init()">
<layout>
<VerticalLayout/>
</layout>
<Declarations>
<FxRadioButtonGroup id="group1"/>
</Declarations>
<states>
<State name="basicState" />
<State name="executiveState" />
</states>

<Script>
<![CDATA[
private function changeHandle(e:Event):void

{ lbl.text=group1.selectedValue.toString(); }

private function init():void

{ group1.addEventListener(Event.CHANGE, changeHandle); }

]]
>
</Script>
<FxButton label="1. go to sg basic state" click="currentState='basicState'" />
<FxButton label="2. go to sg executiveState" click="currentState='executiveState'" />

<FxRadioButton id="rb1" group="

{group1}" label="5:00pm" includeIn="basicState,executiveState" />
<FxRadioButton id="rb2" group="{group1}

" label="6:00pm" includeIn="basicState,executiveState" />
<FxRadioButton id="rb3" group="

{group1}" label="7:00pm (Executives only)" includeIn="executiveState" />
<FxRadioButton id="rb4" group="{group1}

" label="8:00pm" includeIn="basicState,executiveState" />
<FxRadioButton id="rb5" group="

{group1}

" label="9:00pm" includeIn="basicState,executiveState" />

<Label id="lbl" />

</FxApplication>

2.Click "go to sg executiveState" button. Notice 7:00pm (Executives only) RadioButton appears
3. Select the 7:00pm (Executives only) button. Notice the label updates appropriately
4. Click the "go to sg basic state" button.

Actual Results:
Label still reads 7:00pm (Executives only). No change event fired.

Expected Results:
change event should fire.

Workaround (if any):