Default width of TextArea with a height has changed

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">
<s:TextArea id="textarea1" text="Dispatched when a display bject is ab_ut t be rem_ved fr_m the display list.play bject is ab_ut t be rem_ved fr_m the display listplay bject is ab_ut t be rem_ved fr_m the display list" height="90"/>
</s:Application>

2. Compare builds before and after svn 15270
3.

Actual Results:

Width is different

Expected Results:

Not sure which width is correct, but filing this bug in case the difference was not expected.

Workaround (if any):