[Pharo-project] [BUG] Morph cleaning background problem

Hi if you take a morph like ClockMorph you will see that once on the world it will get refresh problems. this is the same with an animatedMorph Here you see that the current gif is displayed but that the background was not cleaned up Henrik may be this is related to your invalidateDamage changes? http://code.google.com/p/pharo/issues/detail?id=1078 Stef