3dgs_snake: That's correct - the decal does not automatically notice when the bounding box was changed. So your method is indeed the correct way to change the decal size on the fly.

Spike: No, this is unrelated. If your script didn't work with the beta, it won't work with the published version either. I understood that you took over the code from that old isometric project and will look into that next week for determining what the problem is.