The console I used is Xbox 360, if this helps.
(Please Ignore the post I put on the main page, I can't delete it and didn't know how to post it. I figured out how! Thus, why I'm here.)
When you start scaling a wall, and you use a plasma cutter, you cannot use the rotator cuff module to spin the plasma cutter around!
Isaac does this movement animation like he fired the gun and the plasma cutter does not rotate. (I am using an unaltered Planet Cracker Plasma Cutter.)This happens any time you climb a wall and use the plasma cutter! I have not tried using the Rotator Cuff Module on any other weapon yet, but I assume you get the same result.
I'd suggest you enable this function with an update or patch, because it get's rather troublesome when you can't properly dismember limbs and you have 3 lurkers on you!
Thank you.