Tweening bitmap fills in Flash 8

The smallest fixes sometimes create new features. Example: The SWF file format specification is supposed to allow for bitmap fill shape tweens the same way it is possible for gradient fills. Well, due to two trivial bugs in the authoring tool and the player this was never possible until now. You had to revert to using a mask to get the effect. Now you can tween bitmap fills directly on the timeline. Here is an example (Flash Player 8 required)