Why distorted an edges when scale with individual origins mode.

I had Scale a faces with individual origins mode.
But edges of face was distorted.
Lock at below image.


file : http://shshop.da.to/tmp/distorted.blend

Why distorted an edges when scale with individual origins mode.

Please answer to me.
Thank you.

How is this a python question?

Sorry.
It is my a mistake.

Perhaps, Do you know a dissolvent?
Then, please answer to me.

I was solved this problem.
This bug is appear early version(Blender 2.68 under)
Thsnk you.