The problem here is that the wall is designated as Outline in order to avoid the cut plan of the wall.
Raising the height of the cut plane has the same problem.
In my opinion, it is not.
If this wall is not expressed as an elevation line on the plane, there is no problem.
I used window opening to wrap the finish on the opening part of the wall...
The whole has to be the facade, so it seems like this part should be cut as
AC25 5010 / AC26 4019 on window 11