Children in SkinnableContainer do not shrink to fit when verticalAlign is justify

Steps to reproduce:
1. Compile & run:
<?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" xmlns:mx="library://ns.adobe.com/flex/halo" minWidth="1024" minHeight="768">

<s:SkinnableContainer id="cont">
<s:layout>
<s:HorizontalLayout verticalAlign="justify" />
</s:layout>
<s:Rect id="r" width="250" height="250">
<s:fill>
<s:SolidColor color="0x00CC00"/>
</s:fill>
</s:Rect>
</s:SkinnableContainer>

<s:Group y="300">
<s:layout>
<s:VerticalLayout/>
</s:layout>
<s:Button click="cont.height=200;cont.width=200;" label="Size container smaller" />
<s:SimpleText text="Container contentHeight:

" />
<s:SimpleText text="Container height:

" />
<s:SimpleText text="Container minHeight:

" />
<s:SimpleText text="r height:

"/>
<s:Button click="cont.height=500;cont.width=500;" label="Size container bigger" />
</s:Group>
</s:Application>

2. Click "Size container smaller" button

Actual Results:
SkinnableContainer now returns a height of 200, but the Rect's height is still 250.

Expected Results:
Rect should now have a height of 200.

Workaround (if any):