Rotate3D can cause elements to not be clickable when they have a non-zero z value

Steps to reproduce:
1. Compile and run:

<s:Application
xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:local="*">

<fx:Declarations>
<fx:Component className="CustomComponent">
<s:Group>
<s:states>
<s:State name="state1"/>
<s:State name="state2"/>
</s:states>

<s:VGroup x="100">
<s:Button label="1. Toggle state" id="toggleStateButton" rotationY.state2="180" click="currentState=currentState=='state1'?'state2':'state1';" />
<s:Button label="2. Try clicking me" click="trace('clicked')" />
</s:VGroup>

<s:transitions>
<s:Transition fromState="state1" toState="state2">
<s:Parallel>
<s:Parallel target="

">
<!-- Remove this Rotate3D and things will work fine -->
<s:Rotate3D />
</s:Parallel>
</s:Parallel>
</s:Transition>
</s:transitions>
</s:Group>
</fx:Component>
</fx:Declarations>

<s:states>
<s:State name="state1"/>
<s:State name="state2"/>
</s:states>

<s:HGroup>
<local:CustomComponent z="9" id="Fail" />
<local:CustomComponent z="0" id="Pass" />
</s:HGroup>

</s:Application>

2. In the left Group click on the first button then try to click on the second button
3.

Actual Results:

Both buttons are no longer clickable

Expected Results:

Should work the same as the Group on the right where z=0

Workaround (if any):