Baseline alignment does not work

Steps to reproduce:
1. Create the following AIR application:

<?xml version="1.0" encoding="utf-8"?>
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx">
<fx:Declarations>
<!-- Place non-visual elements (e.g., services, value objects) here -->
</fx:Declarations>

<s:HGroup id="baselineGroup1" width="100%" verticalAlign="baseline">
<s:Label text="Label Wj"/>
<s:Button label="Wj"/>
<s:ButtonBar>
<s:ArrayCollection>
<fx:String>Wj1</fx:String>
<fx:String>Wj2</fx:String>
</s:ArrayCollection>
</s:ButtonBar>
<s:CheckBox label="Wj" fontSize="20"/>
<s:RadioButton label="Wj" fontSize="30"/>
<s:TextInput text="Wj" fontSize="40"/>
<s:TextArea text="Wj"/>
<s:List>
<s:ArrayCollection>
<fx:String>Wj</fx:String>
</s:ArrayCollection>
</s:List>
</s:HGroup>
</s:WindowedApplication>

2. Run
3. Observe baseline alignment

Actual Results:
Baseline alignment has no effect.

Expected Results:
Baseline of text labels should be aligned. Regression appears in rev 19635. Works as expected in rev 19633. See screen shot comparison of before and after.

Workaround (if any):