Strange orientation of normales
In the last versions of gmsh (> 2.12), normale orientations are strange when meshing a non-convex solid. Over the same solid, normales can be outward and inward. This is not the case when meshing with 2.8.5 version, for instance.
One simple brep body is given in attachment. I have another one with worse behaviour, but the brep file is big (1.8 Mo).