Ancient Reliquary Key Didn't Go To Inventory

Was finishing up a Zana rotation when I finally dropped a reliquary key. When I went to pick it up, it disappeared from the ground, but wasn't in my inventory either. Nobody else from the group was around, and permanent allocation was on, so nobody else would have picked it up before I did. When I said what happened, another member of the party said he had had the same thing happen to him previously.

Wasn't able to get a screenshot or anything to verify, but wanted to report anyway.

We were in Mesa map at the time, Zana 5, kill the corrupted monsters quest.

Did you try a different loot filter in case it's a compatibility issue / deliberate troll?

They don't really care about screenshots - all they want is for you to type /bug in chat.

Don't think it was a loot filter issue, as I saw the drop on the ground and then saw it disappear after I picked it up. Someone else in the group asked what the drop was, so they heard the sound as well. Using Neversink Strict FWIW.

Relickeys are not allocated (yet). Just incase someone ninja'ed it :-/

Guess that's always possible, but I was pretty sure I was the only one around when it dropped. Unfortunately didn't think to /bug at the time :(