IE shadow filter > black box

[Sharpness]

First of all it's great to see this tweenplatform adapted to JS, as many clients don't wan't any flash anymore :-/

 

I'm working on a site where the client asked for a shadow behind the texts, text-shadow isn't yet supported in GS12 I hope to see it in the future, particularly that the code is completely different in IE where I need to use an filter (shadow or glow).

 

When animating a div with this shadow filter I got a black background during the animation in IE 7-9:

http://sharpness.be/demo/201207_kodak/

 

It works fine in every other browser, does someone has a solution for this display glitch?

[GreenSock]

This sounds very similar to the issue addressed here:

http://forums.greensock.com/topic/6226-tweening-css-alpha-on-text-with-dropshadow-filter-in-ie9/page__hl__black