Greetings dear 3D artists! I am trying to create a shape to organize a collection of PBR materials. I add a UV-Sphere (Segments: 128, Rings: 64). Then I apply the Solidify Modifier (Thickness: 0.25 m). I add a quadrangular prism. After combining these objects, I apply the Boolean Modifier (Mode: Difference). After turning on the Shade Smooth mode, distortion artifacts appear on the sphere. What can I do in this situation? Do I need to merge the extra vertices manually, or is there another way? (Blender v2.93).