Been having some difficulties with the new States system and Transitions. Just found another bug, and thought I'd post it up here for those who might also have the same problem.
The bug occurs when using the new Move3D class in a state transition while using xFrom & yFrom in conjunction with xTo & yTo. The outcome is that the components in question don't appear in the correct position.
I've tried the same thing using the 2D Move class (using a technique used in the Learn Flex in a Week video series) and the behaviour is correct.
Bug report with more details and an example here: http://bugs.adobe.com/jira/browse/SDK-26434