I am making a Gui and I made it taller then a standard one and i have the players inventory in it and I noticed that if you click items in the hot bar it spits them out like you are throwing them from your inventory I think it is because if you through a item there in a standard Gui it drops. If i move my hot bar up it doesn't do that. Here is the code used for my hot bar slots.

 

      
           protected void bindPlayerInventory(InventoryPlayer inventoryPlayer) {
            for (int i = 0; i < 3; i++) {
                    for (int j = 0; j < 9; j++) {
                            addSlotToContainer(new Slot(inventoryPlayer, j + i * 9 + 9, 8 + j * 18, 114 + i * 18));
                    }
            }

            for (int i = 0; i < 9; i++) {
                    addSlotToContainer(new Slot(inventoryPlayer, i, 8 + i * 18, 172));
            }
        }

It was my bad I forgot to set the xSize and ySize in the gui class