I recently updated to SW2018 SP3 from 2017. for rendering seals and o-rings I have always used Plastic - Soft Touch texture (looks more realistic than the Rubber texture. Since the update, I have been getting internal feature show-thru on external surfaces. Has anyone else seen this? I am currently trying other textures to replicate the look, but it would be nice if I didn't have to change all of my settings.