Labels with filters doesn't show up when used in a SkinnablePopUpContainer

Steps to reproduce:
1. Create a component that subclass SkinnablePopUpContainer
2. Add a Label with a DropShadowFilter applied to it
3. change the label text.

Note that it is not reproduced in the simulator but on my Android device (SGS1)

Actual Results:
Text doesn't appear until the component is re-rendered somehow

Expected Results:
Text appears ok with his filter

Workaround (if any):
Use two texts and not a filter in my case