Weapon deleted from inventory

[Lira]

At around 6pm Pacific today I was on Ialadris Vesparion, and doing some inventory management in Sanctuary. I suddenly received the message "Lost Item: Arachnid Mandible" â€" which was the weapon I had equipped â€" and the item vanished from my inventory. It didn't fall to the ground, it just disappeared. I was alone in the area at the time, and the ground was clear: as far as I can tell, it simply vanished.  
 

 Here's a screenshot taken almost immediately after, showing the Lost Item message:


[hide=Lost Item][/hide]