Title says it all, I didn't notice this until last night. I even switched shields he was using from the Hrafn Guard to the Wolf shield you see in the pics (you can see another raider using that same shield towards the front on the path as we're leaving a raid, my guy is the one at the back), but it's still backwards. Now I don't think you've really updated the game in the past month so i don't think you fixed one thing then broke another again... but i did change the armor he was wearing so idk maybe one of them has a glitch that causes this? idk... I just went back and forth on the Rhine (starting a raid, then going back to the settlement) and it's doing it every time, it's not a fluke. He's now wearing variations on the Wayland Helmet, gloves, and boots, the Dark Knight body from Reda's shop, and I think the top rank of the Thegn cloak. I also got the Reaper scythe from the store recently and put it on him, he was using the Eclipse scythe before and i didnt' notice this. Then again i also had him using a big full shield (the fire and ice dragon one) and didn't notice this then either.
Ok, I just went to the river Exe and started a raid on the first settlement... same thing. Thought it might be bad code in the newer of the 3 rivers but I guess not...