Blank item with no description, can't drop or get rid of it

Game mode: [Singleplayer]
Problem: [Bug]
Region: [N/A]

I just noticed in one of my “unused weapons” box a blank icon, and no mouse over description or text. When I click on it, it shows only Health damage: 0 and Armor Penetration: 0% - nothing else.

I can only transfer it to my inventory or to a storage box - cannot drop it.

When I enable admin mode and mouse over it shows 51153, which according to a quick google search was “Sledge of Tsotha-lanti”. I spawned a new one and it looks like the item id changed to something else at some point. No idea when.

If I try to place this blank icon item into a dead NPC or a dropped bag, it says I don’t have permission to do it.

Steps on how to reproduce issue:

I had the same. My OP says Daggers of Nameless Days, but that was wrong. They are the unique steel poniard daggers.

Completely un-interactable. It eventually disappeared from my inventory after a server reboot.