There is something fundamentally wrong going on with ORK. I can't see half of my Items in the Inventory as their quantity grows and it's not GUI problem. I'm using simple Inventory menu that displays certain Item Type item in form of Icon. Type display: Merged, just in case.
The problem lies in a sporadic chance where the item added to the inventory is counted twice, below is my troubleshoot.
Created simple event with 'Add to Inventory' on a hotkey, so I ended up pressing it over and over just to find out, that sporadically the Icon of the added item isn't there. I have also a simple 'Has In Inventory' count of that specific item ID, so it counts like it's there, but I can't see it in 2 separate menu's.
So I've added an Item notification in Inventory-Inventory Menu - Notification Settings - Item Added. It procs after every key press, but Icon is not present in most cases. When I get the Notification without Icon in Menu, I can remove on click the last item and it deducts 'Has in Inventory' count by 2. So out 30 of the same items, I can see only about half of their icons...So I continued to go up to about 200 items, seems like the Icon show stopped somewhere around that 30...no way man!
ORK: 2.30.2 Unity 2017
EDIT: Turned out I've had 'Add Items Type' on 'Auto Stack' that kinda stacked my Items even though had no Stack enabled for it. Switching it to just 'Add' seems to have fixed the issue as I just want to use single items for everything.