No as my post says it is composite walls (and in fact non-composite regular fill walls).
I changed the partial structure display option to entire structure display and this fixed the problem. I was using without finishes option as my complex walls have linings that I only show in section views. However this is puzzling as all the layers in the composite walls are set as core only and there are no finishes layers so why doesn't it show correctly in core only display? I am only changing the color of the face not turning off or on a lining.
V12-V27, PC: Ryzen 9 3950X, 64g RAM, RTX5000, Win 11