[FLEX-19840] LinkButton became invisible when use filter when set alpha 0

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: Adobe Flex SDK 3.2 (Release)
• Component/s: mx: LinkBar
• Environment: Affected OS(s): Windows; Affected OS(s): Windows; Browser: Internet Explorer 8.x; Language Found: English
• Assignee: Unassigned
• Reporter: Adobe JIRA
• Created: 16/Jun/09 21:23
• Updated: 16/Jun/09 21:23

Description

Steps to reproduce:
1.set linkbutton's alpha as 0
2.add a blurfilter
3.run

Actual Results:
the linkbutton will be invisible

Expected Results:
what i want is the label with blurfilters and show handcursor, without background.
我想要一个模糊的文字，鼠标移到上面的时候显示手形

Workaround (if any):

code:
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">

<!-Normal->
<mx:LinkButton x="312" y="147" label="NORMAL"/>

<!-USE FILTER->
<mx:LinkButton label="USE FILTER" x="312" y="177">
<mx:filters>
<mx:BlurFilter blurX="3" blurY="3" quality="3"/>
</mx:filters>
</mx:LinkButton>

<!-SET alpha as 0->
<mx:LinkButton x="312" y="204" label="alpha is 0" alpha="0"/>

<!-USE FILTER AND SET alpha AS 0->
<mx:LinkButton x="312" y="231" label="alpha is 0 and use filter" alpha="0">
<mx:filters>
<mx:BlurFilter blurX="3" blurY="3" quality="3"/>
</mx:filters>
</mx:LinkButton>

</mx:Application>