Scale recipe - issue

Platform: Ubuntu 14.04
BeerSmith: latest version

Issue:
If I scale a recipe for example from 5 gal to 10 gal and then scale it back to 5 gal (same equipment as when I started), the grain bill is not the same as when I started at 5 gal.
The difference is a few oz.

Can someone reproduce that?

Thanks,

Tried to recreate it with one of my existing recipes and could not.  Changed my equipment profile when changing the batch size and it showed up.  Looks to me like rounding error introduced when going from 10 gal down to 5 gal compounding the change in amounts due to differences in losses and efficiency in the equipment profiles.