If you describe the issue more precisely (are the cuff sprites hovering over an unrelated image, are the cuffs just there in Nimhes room all the time, etc...) I can try to reproduce (so far no issue found).
I kept running into this visual glitch too, over multiple versions too.
But never bothered reporting it, because it is kind of benign bug.
In details, in early point of Nimhes' story, you have to sneak into Nimhes room and use command wristlet to re-program Nimhes handcuffs. Then alter, when she is in her room and uses them, she gets locked and stuck in them. You need to come and rescue here. Thus, kicking off her corruption...
After you done that, the handcuffs never go away, and you can find them over and over again in her room the next day, and day after that, and use your command wristlet to reprogram again and again. However, besides that interaction, it does not effect anything, and does not break the game in any way. Nimhes never uses handcuffs again, so you cannot replay her getting stuck scene.