A: 
Ryan Guill
A: 

Weird. I just resorted to making a Skin implementation and applying it to a SkinnableContainer. I was compiling using the Beta 2 release of Flex 4 as well. Very strange indeed.

TK Kocheran
I think Ryan Guill was talking about a nightly build, as opposed to the milestone beta 2 flex 4 build: 4.0.0.10485Anyway, I recall having an issue similar to this where a top="0" bottom="0" left="0" right="0" fixed it for me. :/edit: sorry, I misread your question, read it as width="100%" height="100%"
secoif
any chance you could post your solution's code? that'd be helpful.
Devtron