Maybe some CHamfer bug

Sorry, i just few days trying your prog (but already like it)
So, i'm not sure is it a bug, or i just don't know some specifics...but here is it



I made simple box. Turned Symmetry On. Pressed Ctrl-Q. Made an edge loop as you see on the screenshot, and tried to Chamfer this edge loop, but it doesn't do anything. Turned symmetry off - it works.
With symmetry - doesn't.

Sorry if it will be just some my mistake))

Fixed.