On the latest 1.8.4, if you have the book (or all 3 pendants) the Pedestal check doesn't have a "?" over it and you can't put an item there if you check it. You also can't clear the check if it's nothing with a simple right-click (only a ctrl-click to force it).
On the latest 1.8.4, if you have the book (or all 3 pendants) the Pedestal check doesn't have a "?" over it and you can't put an item there if you check it. You also can't clear the check if it's nothing with a simple right-click (only a ctrl-click to force it).