From what I'm reading on the board it definitely is affecting all iOS users.
I'm not sure why that's the case and why you're not able to fix it via the menu.
Try this watchface and let me know if C is working for you or not.
If there's a particular design you want, it can be hard coded. Most designers use the #WCT# tag which is supposed to automate the calculation based on user preferences. Usually most designers will be glad to make a change to a watchface if we know which face.
Basically, this is what they'd need to do:
It's not the best solution but until a patch is made for iOS models, this will work.