This is only recently starting to occur in Unity5.3.1 and i tried the latest January update and nothing is resolving. I also updated Blender itself to see if that resolves the problem and it does not.
The problem is when i import a model now i made in blender, Unity5 smudges our blurs out the texture or does not show there is a visible texture on parts of the same face.
A simple Box.
One side shows the image, all other sides are distorted. Try and adjust the numbers and one side the image will show and the other sides its wont or its smudged out as in distorted, not showing or left as though it was an un-textured side.
As I have said. I have made and imported Blender models into Unity several times before without this issue. Now its an issue. I went as far as creating 6 different materials all named differently and tried applying each one individually.
I renamed and remade several boxes using the same method and each named differently to see if that resolved the issue. It did not. So, how am I suppose to add more context to a project if Unity now screws everything up so badly?