When I render my project I get this weird black shading at the back side of the model; the event only occurs in render. Using the loop cut tool does reduce this effect but not entirely and still produces this effect.
I don't believe this is an issue with the mesh as the shading "glitch" only occurs depending on which direction the camera is positioned. This can get annoying as when rendering a simple camera animation, the effect will be visible and spoil the model I'm presenting.
If you know anyway to fix this issue or suggestions, be sure to send your feedback below. (Blender v2.79 Cycles Render)