Bier,
There isn't a way to show CP skin materials at an end - it will be a single material. You can do tricks with turning the wall around a corner that is the thickness of the wall in some cases.
In you case, the problem seems to be your plates showing.
This is not a typical problem, but rather because your profile was not constructed optimally. You have gaps between the fills for your plates, creating true air space which show up not only in section cuts (where you want them) but also at the wall ends in all views.
I think you were part of a recent thread talking about how to construct CP's for plates such that a plate is four triangular fills, but the adjacent fills were always a different name, allowing for generation of linework in section? And, with no gap at all - to avoid the problem you are seeing here.
I'll search to find that thread if you can't find it..
Cheers,
Karl
One of the forum moderators
AC 28 USA and earlier • macOS Sonoma 14.7.1, MacBook Pro M2 Max 12CPU/30GPU cores, 32GB