Object not listed In Inspector navigator

I am used to use the small circle button at right corner it provides search function and automatically filter class without any additional stuff. (i don't know what this button / feature name is)

but for some reason after refactoring some code. all listed item are gone and i am required to duplicate old scriptable object in order to show it on select window



on prefab case it's get more confusing where prefab that placed in project folder wont show up in the list even though i could use drag fine. it only works when it is placed on scene where i wouldn't want it to be since i want to instantiate the object at runtime instead of placing it in scene .

 

sorry for bumping this.

if anyone doesn't understand my question feels free tell me to describe it better(i'll try)

More Bump

 

Sorry more bumping