A user has reported
Tried completely removing, then reinstalling. At first the day/month appeared fine (with all the installed default settings, and no customization/changes). But after I turned off some icons, changed colors, and customized some other settings, as soon as it went back to displaying the watch face again I noticed it was now again in some other language instead of English. It looked like the language listed right above English if you look at the system language list. Not sure which language that is. I also want to note that of all the other watch faces I've tried or currently have installed, none of them have shown to have this issue. So it's not anything to do with my system settings. Hope this helps! I'd be happy to test it out again for you should you make any changes.
I cannot recreate this in the simulator. Any ideas?!