Just wanted to point out that Linwe's armor makes your arms invisible in the first person view

At least, for me it did.

Currently, Level 33, completed most of the storyline aside from "The Fallen" and beyond that (The quest where you speak to the Jarl in Whiterun about using the castle as a trap again)

Khajiit, light frame, most skills are put into sneaking, etc.

Just a few details to compare if you're unable to recreate the issue if interested.