[Gameplay] - Items not actually being picked up and instead just "disappearing"

[Scoundreya]

Bug Submission:

Category: Gameplay

Issue Title: Items not actually being picked up and instead just "disappearing"

Issue Description: I was playing on a pvp survival server (SanFran Survival) and I was exploring around and found the remains of someones camp with a backpack laying there with some logs, twigs, flint and gold in the backpack (stacking items).

When I went to go and cut down trees and picked up the pinecones, they went into my inventory (my 1-10 slots) since I hadn't picked any up yet and those slots were free. But when I picked up the logs, my character did the animation of picking them up, and the logs disappeared from the ground as if i'd picked them up, but there was no sound indicating I had picked up the item, and also there was no animation of the item going into my inventory as it usually does.

I found this really odd, but just kept collecting. After a while I noticed I hadn't actually collected any logs even though they disappeared off the ground as if I had - so I knew it wasn't lag related (sometimes I get delays where I will go down to pick things up, and there is a delay and I have to wait for it to actually be picked up, which I've had happen and isn't that big of a deal).

So, I had deducted that it was something to do with the backpack I had picked up off the ground. So, I moved my stack of logs from the backpack and into my 1-10 inventory slots and tried picking up a log - Sure enough! - it worked! I tried this with twigs, and grass (both of which had stacks in the bag when I picked it up) and the same thing happened that had happened with the logs - they just disappeared and I never "actually" picked them up even though the animation played through and they weren't on the ground anymore.

So, I think this either has something to do with the fact that the player whose backpack I found was maybe not on the server? I'd never really had this issue until this play session. But it definitely had to do with the backpack that I'd picked up. I further verified this issue by making myself my own backpack, removing all of the items from what I started to call the "cursed backpack" and placed all of the items in the new backpack I had just crafted. When I tried to pick up logs and twigs and such (I had them placed in my newly crafted backpack, like they had been on the "cursed one") and it worked like normal.

Steps to Reproduce: Played on a survival pvp server. Picked up someone else's backpack that had been on the ground for I don't know how long - They possibly had since logged off of the server since leaving the backpack on the ground, or maybe they were still on the server (possibly they had died and were a ghost on the server?) I really am not sure as to the details of the backpack prior to me picking it up.