Think of it this way, all your geometry, thus the closed loops of your (material) layers are in the same context. There is no wall object, nor a plaster object, nor a tile object. The section cut > fill operation uses two outer existing geometry loops to fill, then the next two, etc. In between two fills there is nothing to fill, there aren’t two loops to use.
Solution: think of real objects and create them as such: a wall group, a plaster group, a tile group, etc.
They all will have theyr own skin, an inner and an outer face.
In other words: section cut > and fill doesn’t use any loop twice.
See:https: