This guy made a thread here about this annoying bug.
It's not just an annoying feature it's a bug that pops up if you press the money button instead of using the hotkey.
This doesn't show up if you press the p-key. The tooltip obstructs the view of the item shop even when you are dead or when you approach the item shop while looking at the menu.
It's very annoying for support because you want to buy wards fast off of the consumables but you can't see it or click it because the tooltip obscures the shop menu.
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