I'm having some problems using matrix3d and borderRadius. You can fine a fiddle here:
If you run the fiddle on Chrome, the borderRadius animation isn't rendered (if you resize the browser window, the borderRadius become correct).
> if you comment "left:300" in the tweenmax call, the borderRadius animation works
> if you comment -webkit-transform:matrix3d..., the borderRadius animation works
I know this is not the perfect example (the original script is more complex), but I tried to make it understandable.
Hope someone can help.