I notice that if 2 surfaces are grouped, then I am not able to apply a texture.
I made a sample rectangular surface divided it into 2, if I group them I cannot apply the texture. when I explode them, the texture is applied to both areas. I made the axes aligned to the area. I am still getting the texture applied offset by an angle.
I hope it is not this that I am experiencing: Texture orientation is not preserved when grouping faces in a context