Precursor Skin wardrobe unlock bug
What happens with gear that I currently possess that is already transmuted?
The skins for both of the items used in the most recent transmutation of your gear will be unlocked in your Wardrobe in this situation. This means that you will have skins representing your most recent stats and appearance choices for each transmuted item.
You may find this enlightening.
All that says to me is that I will have Eye of Rodgort unlocked, which is already true.
Lidless Eye is a precursor of Eye of Rodgort, and it has been stated that if you unlocked an item skin, its precursor skin is unlocked with it too.
So with that statement in mind, if you unlock Eye of Rodgort, Lidless Eye should be unlocked too.