not sure if this is intended or not, but I thought of collections of a sort of wishlist feature also.

by unable I mean that one is not able to right click items that have not been learned yet.

(btw is says "remove to collection" if you want to remove an item from the collecton list. should be 'from', grammatically speaking :P)

It should allow you to. It looks like a change I made to make it play nicer with Mogit broke the feature. It will be fixed in the next release that should be out later today.