Suppose this belongs here, as it is not really a bug, but more of a ... troubling issue.
Basically, the bounding box seems to remain the same when object changes Z elevation. Say, at Z elevation of -1000, the object appears tiny, however the bounding box still retains the same dimensions as at elevation of 0.
Which gets messy when determining overlapping, you know, using a mouseover and such. Suppose one wants to scale an object resting at -1000 elevation up with a mouseover, however if its original bounding box remains the same, it activates even when the mouse is still far from the tiny sprite.
A cosmetic issue, no doubt; sprite overlapping wouldn't pose a problem at all, but it is the mouse that we are concerned about.