Transformed selection extends beyond selection bounds

[b14ckfir3]

Hello there!

 

I use Photo for UI design where, in many cases, I need to transform a part of a screenshot to do some quick and dirty modifications.
The problem is that the box selection (the only one I've tested), seems to have a slight amount of anti aliasing on it's edges. When I try to transform a selection using the move tool, the selected image quickly goes beyond the selection bounds as seen in the image:

 

 

I see how anti aliasing is a useful feature for selections in general (ellipse, free hand, etc.) but it's not any useful for the box selection, in my opinion.

 

Hope that I put you in my mind and it's something easy to fix  :)