OmniJS Copy as JavaScript mutates shape

Bug ? Copy as JavaScript mutates shape:

I wonder if some inadvertent data mutation is occurring somewhere in the Copy as JS Code ?

If I choose an Adjustable Star shape from the Plain Shapes stencil, and select it,

  1. Copy as AppleScript works as expected,
  2. Copy as JavaScript, rather than simply updating the clipboard, modifies the shape itself, visibly reducing its height and width on the screen, and as reported in the geometry inspector, and also changing its aspect ratio.