Hello, I owned a Chanel camera bag in a VERY similar style that I recently sold, it had exactly the problems you're describing and is a big part of the reason I sold. Also, I found the chain strap really annoying, it wouldn't stay put and the leather bit (that was supposed to be on top of the shoulder to keep the bag comfortable to wear) always moved around.
https://forum.purseblog.com/threads/leather-surgeons-results-process-experience.1012129/
You can see pictures of my bag here, and I think you'll be able to tell that the bag is quite warped and the shape has definitly changed-- and that's when it's fully stuffed. When I wear it normally without the full stuffing, the zipper bit completely caves in and the top of the bag is pulled completely flat by the way the chain is (sorry, can't find pictures!). I'm a big lover of camera bags personally but I definitely would say I wouldn't recommend this one if you don't like the way that looks.