While doing the boots of the crusader quest for the kotn I have encountered what might be a glitch, the uesp doesnt say anything about it.
After I entered the grotto and picked up the boots I soon figured out that the game was treating the boots as a quest item, so I cant drop them. I even went back to the priory and put them on the armor stand and then took it off and they are still a quest item.

this has never happened before :shrug:

anybody have ideas for making them no longer be quest items?

Yeah, maybe beat the Knights of the Nine quest will work. It will most likely cause the boots to go normal item.

load a previous save and try again?

No, they are supposed to be a quest item until you complete a certain other quest in the KotN questline. Then they will no longer be a quest item. See below:

the boots are a quest item because you need them to get the mace of the crusader