Mac OS X, MacBookPro 2010, NVIDIA GeForce 320M 256MB
Short description of error
Cmd C = Copying Mesh to Buffer and pasting it into another Blend actually change the vertex index order. This should not happen I think.
Exact steps for others to reproduce the error
- Select some objects
- Copy Cmd C or Ctrl C
- Paste Cmd V or Ctrl V in any Blend file
- The vertex is out of order, basically obvious when Join as Shapekeys.