So I was about to start leveling my Infiltrator and decided to move some T5 gear from my item mule - Alchemist. I unequipped T5 Energetic Boots, Ring and Amulet from it and moved them to the Vault then immediately exited to the main menu, logged in and joined in with my Infiltrator. First thing I have noticed was my own Alchemist standing next to me near the Vault and then it disappeared (managed to take a screenshot before that). Then I open the vault and to my surprise the Boots, Ring and Amulet I just have putted in with my Alchemist are not there. I quickly switched to my Alchemist and items are not there either T_T. It's not the first time this happens to me and once items even got duped (although I lost other items I was moving in the process). I know it's not much but I hope this will help to fix or at least identify the black hole in the Vault that sucks out items from this dimension lol.
P.S. Stalladir is on my 2nd char slot and Acidice is on 3th if that's any help.