I'm having the same issue with my save too.. I'm a devoted fighter as well, so even if I do just concede to the bug I'll be taking the damage hit from using another weapon on top of having a useless subclass.. here is two clips of it in my game
https://gfycat.com/EvenColossalAfricanaugurbuzzard
https://gfycat.com/FluidNeglectedJaguarundi