It strange because the same element changes just on changing the Bmat to something else. And even when I edit the first BMat that wont show outlines so that it has the same Fill and Surface as a BMat that will show outlines, the first BMat still wont show outlines for the element. And changing the outline settings for the element does nothing.
Its as if the Bmat is bugged.and overrides any element outline pen settings.
I have checked elevation settings, view settings, element settings, fills, materials, surfaces.
I dont know what setting affects element outlines in elevations except the element outline pen, and this is not changing anything in this particular case; Choosing certain building materials turns off an elements outlines in elevation, and I cannot see why this is.