Accessing the Quick Inventory menu does not work while in menu mode
If pressing the F1 key to access the Quick Inventory menu, nothing happens if you already are in menu mode. This is definitely not the case in Vanilla Morrowind. I, for one, prefer to be able to see the weapons while selecting them for the Quick Inventory, and then it is very convenient to already have the inventory menu open. I have observed this issue in all 0.48 development builds I have tested, including the most recent one.