It's not a defect per se, but I checked my mono cles and it does line up, as does my azur and ebene cles. If you just got it and it bothers you, you could exchange it right away.
I noticed that they are getting kind of sloppy lately with matching seams- when I bought my latest ebene bag I had to go thru 3 of them to find one where the sides lined up. Good luck and let us know what you do.
I would exchange it. I am also thinking about getting one. Hope you love it.