I'm trying to use components of the inventory example in my existing game scene and it seems work fine except that when I click on an inventory item and try to drag it, the item disappears from view. Similarly, if I left click on the item, it also disappears. However, if I then either complete the drag motion on a valid inventory slot or left click again on a valid inventory slot, the item moves to the slot. Essentially the item just disappears when I begin dragging it.
I've looked over the settings for a few hours now but I can't seem to find where I've broken it. Can anyone give me some clues as to what I might have done wrong? Many thanks.