Items in the left hand are displayed incorrectly.
This shows obviously well when holding a sword in the new hand, The sword's handle is displayed all the way to the to the left of the hand, half in and half out. This is also an issue with fence gates, all chests, and all swords. Stairs have also taken the toll, the texture for the handheld stair has been mirrored.
Items in off hand render as if they're being held by a right hand, causing them to clip outside of an Alex model's arms.