I didn't have the problem with my original r8000 hanger, definitely the OSPW for me. I think we have our derailleurs on differently (not sure which way is correct. Take a look at the angle of or hangers, yours is straight while mine is at an angle. I just had a look at a mates bike that was built by a professional mechanic and his is also angled. It may be something for you to look at. Remove derailleur, rotate backwards and tighten it up again.