Node bounding box doesn't update on undo geometry movement

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What steps will reproduce the problem?
1. In SceneComposer, move a model's geometry
2. Now, select the geometry's parent node
3. Keep pressing undo, notice that the bounding box does not update to reflect 
the undoed geometry's movements

What is the expected output? What do you see instead?
I notice that this doesn't occur when directly moving the node, so obviously it 
seems that the bounding box should be updated for both a node and all of its' 
parents.

Original issue reported on code.google.com by ShadowIs...@gmail.com on 4 Sep 2011 at 9:27