Clicking on a usable item in my menu screen does nothing. I've tried several methods including setting up a sub-menu screen with an option to use. If 'Close After Use' is checked under inventory settings, the menu will indeed close but that's all. The Item isn't consumed, nor any of its effects cast. If I uncheck this option then I'm unable to interact with any items until I close and reopen the inventory screen. I'm using mouse to select and control everything. Also, I'm able to drag items onto my equipment screen to equip them, but unchecking 'Give On Drop' won't allow the item to be used via dragging. 'Use Screen Combatant' is selected, and I've also tried to force this in the item's setting. No dice.