Hi everyone,
Problem: I am importing an FBX file from blender into UE 4.26. When I import the mesh into UE, almost all meshes in the FBX file are correctly rendered except one mesh. The problem is, in this mesh, when we look from front view, it is opaque, but if we look from any other view, it appears to be transparent.
Desired output: It should be opaque in all direction.
About me: I am a rookie In UE4. Please provide steps to resolve the issue.
Thank you.
You have a problem with the normals in blender.
Thank you for your quick reply. Could you please explain what problem are you referring to?
Images from UE, for front and back view:
Meh… a lot of possibilities for errors there… 
When you look at the normals in blender, are they all pointing outwards? ( it’s a sphere? )
Have you done something strange in the material? ( can you show it? )
PS: If you’re using a cubemap, it actually doesn’t matter what shape you use, because the UVs are encoded based on point of view, not the mesh.
Just in case your problem is with blender normals: you can visualize these in blender as shown below, one of the most useful features:
see the cyan-colored lines pointing out of the faces: these should all point outwards to avoid issues like you encounter.
Hope this helps you with the blender part.
Check also my post here
It was indeed problem with blender normals. Thank you ClockworkOcean and herb64
