GraphicElement snapshot capture doesn't match player bounds of stroked objects

Steps to reproduce:
1. Run the code below
2. Click on the button to change state
3. Watch the transition effect

Actual Results:
All three objects shift up/left during the effect, then snap back down when the effect finishes

Expected Results:
The objects should not move during the effect

Workaround (if any):
Don't use a stroke, or use a stroke that lines up with pixel boundaries

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark">

<s:states>
<s:State name="s1"/>
<s:State name="s2"/>
</s:states>
<s:transitions>
<s:Transition>
<s:CrossFade targets="

"/>
</s:Transition>
</s:transitions>
<s:Button label="change state" click="currentState = currentState == 's1' ? 's2' : 's1'"/>
<s:Path id="path" data="L 50 0 L 50 20 L 0 20 L 0 0 L 50 20 M 50 0 L 0 20" x="10" y="60">
<s:stroke>
<s:SolidColorStroke color="0"/>
</s:stroke>
</s:Path>
<s:Rect id="rect" x="10" y="100" width="50" height="20">
<s:stroke>
<s:SolidColorStroke color="0"/>
</s:stroke>
</s:Rect>
<s:Ellipse id="ellipse" x="10" y="140" width="30" height="30">
<s:stroke>
<s:SolidColorStroke color="0"/>
</s:stroke>
</s:Ellipse>
</s:Application>